From cf827d114933401eaa59ffccca495c40061f909f Mon Sep 17 00:00:00 2001
From: Greg Bowyer <gbowyer@apache.org>
Date: Fri, 24 Aug 2012 20:42:37 -0700
Subject: [PATCH 1/1] LUCENE-4332: Integrate PiTest mutation coverage tool
 into build

---
 build.xml                                     |    9 +
 lucene/build.xml                              |    8 +
 lucene/common-build.xml                       |  122 +++++++++++-
 lucene/licenses/ant-launcher-1.8.3.jar.sha1   |    1 +
 lucene/licenses/ant-launcher-LICENSE-ASL.txt  |  272 +++++++++++++++++++++++++
 lucene/licenses/ant-launcher-NOTICE.txt       |   26 +++
 lucene/licenses/hamcrest-core-1.1.jar.sha1    |    1 +
 lucene/licenses/hamcrest-core-LICENSE-BSD.txt |   27 +++
 lucene/licenses/hamcrest-core-NOTICE.txt      |   27 +++
 lucene/licenses/jcommander-1.12.jar.sha1      |    1 +
 lucene/licenses/jcommander-LICENSE-ASL.txt    |  203 ++++++++++++++++++
 lucene/licenses/jcommander-NOTICE.txt         |    5 +
 lucene/licenses/pitest-0.28.jar.sha1          |    1 +
 lucene/licenses/pitest-LICENSE-ASL.txt        |  202 ++++++++++++++++++
 lucene/licenses/pitest-NOTICE.txt             |   22 ++
 lucene/licenses/pitest-ant-0.28.jar.sha1      |    1 +
 lucene/licenses/pitest-ant-LICENSE-ASL.txt    |  202 ++++++++++++++++++
 lucene/licenses/pitest-ant-NOTICE.txt         |   22 ++
 lucene/licenses/snakeyaml-1.6.jar.sha1        |    1 +
 lucene/licenses/snakeyaml-LICENSE-ASL.txt     |  202 ++++++++++++++++++
 lucene/licenses/snakeyaml-NOTICE.txt          |   26 +++
 lucene/test-framework/ivy.xml                 |   21 ++-
 lucene/tools/build.xml                        |    1 +
 solr/build.xml                                |   19 ++
 solr/example/build.xml                        |    3 +
 solr/example/example-DIH/build.xml            |    3 +
 26 files changed, 1424 insertions(+), 4 deletions(-)
 create mode 100644 lucene/licenses/ant-launcher-1.8.3.jar.sha1
 create mode 100644 lucene/licenses/ant-launcher-LICENSE-ASL.txt
 create mode 100644 lucene/licenses/ant-launcher-NOTICE.txt
 create mode 100644 lucene/licenses/hamcrest-core-1.1.jar.sha1
 create mode 100644 lucene/licenses/hamcrest-core-LICENSE-BSD.txt
 create mode 100644 lucene/licenses/hamcrest-core-NOTICE.txt
 create mode 100644 lucene/licenses/jcommander-1.12.jar.sha1
 create mode 100644 lucene/licenses/jcommander-LICENSE-ASL.txt
 create mode 100644 lucene/licenses/jcommander-NOTICE.txt
 create mode 100644 lucene/licenses/pitest-0.28.jar.sha1
 create mode 100644 lucene/licenses/pitest-LICENSE-ASL.txt
 create mode 100644 lucene/licenses/pitest-NOTICE.txt
 create mode 100644 lucene/licenses/pitest-ant-0.28.jar.sha1
 create mode 100644 lucene/licenses/pitest-ant-LICENSE-ASL.txt
 create mode 100644 lucene/licenses/pitest-ant-NOTICE.txt
 create mode 100644 lucene/licenses/snakeyaml-1.6.jar.sha1
 create mode 100644 lucene/licenses/snakeyaml-LICENSE-ASL.txt
 create mode 100644 lucene/licenses/snakeyaml-NOTICE.txt

diff --git a/build.xml b/build.xml
index 880b545..97a9874 100644
--- a/build.xml
+++ b/build.xml
@@ -33,6 +33,15 @@
     </sequential>
   </target>
 
+  <target name="pitest" description="Test both Lucene and Solr">
+    <sequential>
+      <subant target="pitest" inheritall="false" failonerror="false">
+        <fileset dir="lucene" includes="build.xml" />
+        <fileset dir="solr" includes="build.xml" />
+      </subant>
+    </sequential>
+  </target>
+
   <target name="javadocs" description="Generate Lucene and Solr javadocs">
     <sequential>
       <subant target="javadocs" inheritall="false" failonerror="true">
diff --git a/lucene/build.xml b/lucene/build.xml
index d6ed807..52f4239 100644
--- a/lucene/build.xml
+++ b/lucene/build.xml
@@ -55,6 +55,10 @@
           description="Runs all unit tests (core, modules and back-compat)"
   />
 
+  <target name="pitest" depends="pitest-modules"
+          description="Runs pitests (core, modules and back-compat)"
+  />
+
   <path id="backwards.test.compile.classpath">
     <path refid="junit-path"/>
     <path refid="ant-path"/>
@@ -490,6 +494,10 @@
     <modules-crawl target="test" failonerror="true"/>
   </target>
 
+  <target name="pitest-modules" depends="compile-test">
+    <modules-crawl target="pitest" failonerror="false"/>
+  </target>
+
   <!--
    compile changes.txt into an html file
    -->
diff --git a/lucene/common-build.xml b/lucene/common-build.xml
index bb9b887..8d84d8f 100644
--- a/lucene/common-build.xml
+++ b/lucene/common-build.xml
@@ -106,7 +106,7 @@
     <isset property="run.clover"/>
   </condition>
   <property name="tests.clover.args" value=""/>
-  
+
   <property name="tests.tempDir" value="${build.dir}/test"/>
 
   <property name="tests.cachefile" location="${common.dir}/tools/junit4/cached-timehints.txt" />
@@ -225,6 +225,16 @@
   <property name="clover.db.dir" location="${common.dir}/build/clover/db"/>
   <property name="clover.report.dir" location="${common.dir}/build/clover/reports"/>
 
+  <property name="pitest.report.dir" location="${common.dir}/build/pitest/${name}/reports"/>
+  <property name="pitest.distance" value="0" />
+  <property name="pitest.sysprops" value="-Dlucene.version=${dev.version}" />
+  <property name="pitest.threads" value="2" />
+  <property name="pitest.testCases" value="org.apache.*" />
+  <property name="pitest.maxMutations" value="0" />
+  <property name="pitest.timeoutFactor" value="1.25" />
+  <property name="pitest.timeoutConst" value="3000" />
+  <property name="pitest.targetClasses" value="org.apache.*" />
+
   <!-- a reasonable default exclusion set, can be overridden for special cases -->
   <property name="rat.excludes" value="**/TODO,**/*.txt"/>
 
@@ -1152,6 +1162,14 @@ ${tests-output}/junit4-*.suites     - per-JVM executed suites
     <path id="clover.classpath"/>
   </target>
 
+  <target name="pitest" if="run.pitest" depends="compile-test,install-junit4-taskdef,clover,validate"
+      description="Run Unit tests using pitest mutation testing. To use, specify -Drun.pitest=true on the command line.">
+    <echo>Code coverage with pitest enabled.</echo>
+    <ivy:cachepath file="${common.dir}/test-framework/ivy.xml" conf="pitest-stdalone"
+      type="jar" transitive="false" pathid="pitest.framework.classpath" />
+    <pitest-macro />
+  </target>
+
   <target name="generate-test-reports" description="Generates test reports">
     <mkdir dir="${junit.reports}"/>
     <junitreport todir="${junit.output.dir}">
@@ -1757,4 +1775,106 @@ ${tests-output}/junit4-*.suites     - per-JVM executed suites
      </sequential>
   </macrodef>
 
+  <macrodef name="pitest-macro" description="Executes junit tests.">
+    <attribute name="pitest.report.dir" default="${pitest.report.dir}"/>
+    <attribute name="pitest.framework.classpath" default="pitest.framework.classpath"/>
+    <attribute name="pitest.distance" default="${pitest.distance}" />
+    <attribute name="pitest.sysprops" default="${pitest.sysprops}" />
+    <attribute name="pitest.threads" default="${pitest.threads}" />
+    <attribute name="pitest.testCases" default="${pitest.testCases}" />
+    <attribute name="pitest.maxMutations" default="${pitest.maxMutations}" />
+    <attribute name="pitest.timeoutFactor" default="${pitest.timeoutFactor}" />
+    <attribute name="pitest.timeoutConst" default="${pitest.timeoutConst}" />
+    <attribute name="pitest.targetClasses" default="${pitest.targetClasses}" />
+
+    <attribute name="junit.classpath" default="junit.classpath"/>
+
+    <attribute name="src.dir" default="${src.dir}"/>
+    <attribute name="build.dir" default="${build.dir}"/>
+
+    <sequential>
+
+        <echo>
+PiTest mutation coverage can take a *long* time on even large hardware.
+(EC2 32core sandy bridge takes at least 6 hours to run PiTest for the lucene test cases)
+
+The following arguments can be provided to ant to alter its behaviour and target specific tests::
+
+-Dpitest.report.dir (@{pitest.report.dir}) - Change where PiTest writes output reports
+
+-Dpitest.distance (@{pitest.distance}) - How far away from the test class should be mutated
+   0 being immeditate callees only
+
+-Dpitest.threads (@{pitest.threads}) - How many threads to use in PiTest 
+   (note this is independent of junit threads)
+
+-Dpitest.testCases (@{pitest.testCases}) - Glob of testcases to run
+
+-Dpitest.maxMutations (@{pitest.maxMutations}) - Maximum number of mutations per class under test
+    0 being unlimited
+
+-Dpitest.timeoutFactor (@{pitest.timeoutFactor}) - Tunable factor used to determine
+    if a test is potentially been mutated to be an infinate loop or O(n!) (or similar)
+
+-Dpitest.timeoutConst (@{pitest.timeoutConst}) - Base constant used for working out timeouts
+
+-Dpitest.targetClasses (@{pitest.targetClasses}) - Classes to consider for mutation
+        </echo>
+
+        <taskdef name="pitest" classname="org.pitest.ant.PitestTask"
+            classpathref="pitest.framework.classpath" />
+
+        <path id="pitest.classpath">
+            <path refid="junit.classpath"/>
+            <path refid="pitest.framework.classpath"/>
+            <pathelement path="${java.class.path}"/>
+        </path>
+
+        <!-- Java7 has a new bytecode verifier that _requires_ stackmaps to be present in the
+             bytecode. Unfortunately a *lot* of bytecode manipulation tools (including pitest)
+             do not currently write out this information; for now we are forced to disable this
+             in the jvm args -->
+        <condition property="pitest.extra.jvm.args" value="-XX:-UseSplitVerifier">
+            <and>
+                <!-- Hotspot goes by a great many names. Other VMS (jrockit, J9 etc might require other tricks here) -->
+                <or>
+                    <!-- Oracle / sun JVM release -->
+                    <contains string="${java.vm.name}" substring="HotSpot" casesensitive="false" />
+
+                    <!-- Opensource HotSpot (sorta hotspot) -->
+                    <contains string="${java.vm.name}" substring="OpenJDK" casesensitive="false" />
+
+                    <!-- Redhats IcedTea (mostly hotspot) -->
+                    <contains string="${java.vm.name}" substring="IcedTea" casesensitive="false" />
+
+                    <!-- Azul MRI-J (kinda mostly hotspot) -->
+                    <contains string="${java.vm.name}" substring="MRI-J" casesensitive="false" />
+
+                    <!-- Another Azul name (sorta kinda mostly hotspot) -->
+                    <contains string="${java.vm.name}" substring="AVM" casesensitive="false" />
+
+                    <!-- I am sure I have missed some version of hotspot somewhere here -->
+                </or>
+
+                <matches string="${ant.java.version}" pattern="1.7|1.8" />
+            </and>
+        </condition>
+
+        <pitest
+            classPath="pitest.classpath"
+            targetClasses="@{pitest.targetClasses}"
+            targetTests="@{pitest.testCases}"
+            reportDir="@{pitest.report.dir}"
+            sourceDir="@{src.dir}"
+            threads="@{pitest.threads}"
+            maxMutationsPerClass="@{pitest.maxMutations}"
+            timeoutFactor="@{pitest.timeoutFactor}"
+            timeoutConst="@{pitest.timeoutConst}"
+            verbose="false"
+            dependencyDistance="@{pitest.distance}"
+            mutableCodePaths="@{build.dir}/classes/java"
+            jvmArgs="-ea,${pitest.extra.jvm.args},@{pitest.sysprops}" />
+    </sequential>
+  </macrodef>
+
 </project>
diff --git a/lucene/licenses/ant-launcher-1.8.3.jar.sha1 b/lucene/licenses/ant-launcher-1.8.3.jar.sha1
new file mode 100644
index 0000000..c1088d9
--- /dev/null
+++ b/lucene/licenses/ant-launcher-1.8.3.jar.sha1
@@ -0,0 +1 @@
+0a22bcf9438c41828b04c13b052c4886606abac2
diff --git a/lucene/licenses/ant-launcher-LICENSE-ASL.txt b/lucene/licenses/ant-launcher-LICENSE-ASL.txt
new file mode 100644
index 0000000..ab3182e
--- /dev/null
+++ b/lucene/licenses/ant-launcher-LICENSE-ASL.txt
@@ -0,0 +1,272 @@
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diff --git a/lucene/licenses/ant-launcher-NOTICE.txt b/lucene/licenses/ant-launcher-NOTICE.txt
new file mode 100644
index 0000000..4c88cc6
--- /dev/null
+++ b/lucene/licenses/ant-launcher-NOTICE.txt
@@ -0,0 +1,26 @@
+   =========================================================================
+   ==  NOTICE file corresponding to the section 4 d of                    ==
+   ==  the Apache License, Version 2.0,                                   ==
+   ==  in this case for the Apache Ant distribution.                      ==
+   =========================================================================
+
+   Apache Ant
+   Copyright 1999-2008 The Apache Software Foundation
+
+   This product includes software developed by
+   The Apache Software Foundation (http://www.apache.org/).
+
+   This product includes also software developed by :
+     - the W3C consortium (http://www.w3c.org) ,
+     - the SAX project (http://www.saxproject.org)
+
+   The <sync> task is based on code Copyright (c) 2002, Landmark
+   Graphics Corp that has been kindly donated to the Apache Software
+   Foundation.
+
+   Portions of this software were originally based on the following:
+     - software copyright (c) 1999, IBM Corporation., http://www.ibm.com.
+     - software copyright (c) 1999, Sun Microsystems., http://www.sun.com.
+     - voluntary contributions made by Paul Eng on behalf of the 
+       Apache Software Foundation that were originally developed at iClick, Inc.,
+       software copyright (c) 1999.
diff --git a/lucene/licenses/hamcrest-core-1.1.jar.sha1 b/lucene/licenses/hamcrest-core-1.1.jar.sha1
new file mode 100644
index 0000000..1b8a368
--- /dev/null
+++ b/lucene/licenses/hamcrest-core-1.1.jar.sha1
@@ -0,0 +1 @@
+860340562250678d1a344907ac75754e259cdb14
diff --git a/lucene/licenses/hamcrest-core-LICENSE-BSD.txt b/lucene/licenses/hamcrest-core-LICENSE-BSD.txt
new file mode 100644
index 0000000..5ebe92c
--- /dev/null
+++ b/lucene/licenses/hamcrest-core-LICENSE-BSD.txt
@@ -0,0 +1,27 @@
+BSD License
+
+Copyright (c) 2000-2006, www.hamcrest.org
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list of
+conditions and the following disclaimer. Redistributions in binary form must reproduce
+the above copyright notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the distribution.
+
+Neither the name of Hamcrest nor the names of its contributors may be used to endorse
+or promote products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.
diff --git a/lucene/licenses/hamcrest-core-NOTICE.txt b/lucene/licenses/hamcrest-core-NOTICE.txt
new file mode 100644
index 0000000..5ebe92c
--- /dev/null
+++ b/lucene/licenses/hamcrest-core-NOTICE.txt
@@ -0,0 +1,27 @@
+BSD License
+
+Copyright (c) 2000-2006, www.hamcrest.org
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list of
+conditions and the following disclaimer. Redistributions in binary form must reproduce
+the above copyright notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the distribution.
+
+Neither the name of Hamcrest nor the names of its contributors may be used to endorse
+or promote products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.
diff --git a/lucene/licenses/jcommander-1.12.jar.sha1 b/lucene/licenses/jcommander-1.12.jar.sha1
new file mode 100644
index 0000000..af6244e
--- /dev/null
+++ b/lucene/licenses/jcommander-1.12.jar.sha1
@@ -0,0 +1 @@
+7409692b48022f9eca7445861defbcdb9ee3c2a8
diff --git a/lucene/licenses/jcommander-LICENSE-ASL.txt b/lucene/licenses/jcommander-LICENSE-ASL.txt
new file mode 100644
index 0000000..d0c18cf
--- /dev/null
+++ b/lucene/licenses/jcommander-LICENSE-ASL.txt
@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2012, Cedric Beust
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
diff --git a/lucene/licenses/jcommander-NOTICE.txt b/lucene/licenses/jcommander-NOTICE.txt
new file mode 100644
index 0000000..64fc84a
--- /dev/null
+++ b/lucene/licenses/jcommander-NOTICE.txt
@@ -0,0 +1,5 @@
+JCommander Copyright Notices 
+============================
+
+Copyright 2010 Cedric Beust <cedric@beust.com>
+
diff --git a/lucene/licenses/pitest-0.28.jar.sha1 b/lucene/licenses/pitest-0.28.jar.sha1
new file mode 100644
index 0000000..4c86c7c
--- /dev/null
+++ b/lucene/licenses/pitest-0.28.jar.sha1
@@ -0,0 +1 @@
+ab0a6077cb6fa746716b3fa862cc82b991d1bac6
diff --git a/lucene/licenses/pitest-LICENSE-ASL.txt b/lucene/licenses/pitest-LICENSE-ASL.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/lucene/licenses/pitest-LICENSE-ASL.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/lucene/licenses/pitest-NOTICE.txt b/lucene/licenses/pitest-NOTICE.txt
new file mode 100644
index 0000000..e6d31e3
--- /dev/null
+++ b/lucene/licenses/pitest-NOTICE.txt
@@ -0,0 +1,22 @@
+PIT is a fast mutation testing system based on ASM available under the Apache 2 licence.
+
+For documentation and details of usage please see http://pitest.org
+
+Acknowledgements
+
+PIT is largely the original work of Henry Coles, but includes the following code from third party sources. 
+
+* A line coverage implementation partially derived from http://code.google.com/p/javacoveragent/  (Apache 2 licensed).
+* A base64 encoding implementation by Robert Harder (public domain)
+
+The following people have also contributed to the PIT codebase
+
+Stefan Pendorf - Improved inline consts mutator, member variable mutator and numerous code improvements
+Nicolas Rusconi - Ant Task
+Aidan Morgan - Support for configuration files
+Struan Kerr-Liddell - Improvements to html report
+
+The above list may be out of date, please check commit history for definitive list of contributors.
+
+Although PIT does not incorporate any code from the Jumble project (http://jumble.sourceforge.net/), the Jumble codebase was used as a guide when developing
+some aspects of PIT.
\ No newline at end of file
diff --git a/lucene/licenses/pitest-ant-0.28.jar.sha1 b/lucene/licenses/pitest-ant-0.28.jar.sha1
new file mode 100644
index 0000000..73b6f5a
--- /dev/null
+++ b/lucene/licenses/pitest-ant-0.28.jar.sha1
@@ -0,0 +1 @@
+60bc68db45e0a09c16245782b9fe1b36356b800d
diff --git a/lucene/licenses/pitest-ant-LICENSE-ASL.txt b/lucene/licenses/pitest-ant-LICENSE-ASL.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/lucene/licenses/pitest-ant-LICENSE-ASL.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/lucene/licenses/pitest-ant-NOTICE.txt b/lucene/licenses/pitest-ant-NOTICE.txt
new file mode 100644
index 0000000..e6d31e3
--- /dev/null
+++ b/lucene/licenses/pitest-ant-NOTICE.txt
@@ -0,0 +1,22 @@
+PIT is a fast mutation testing system based on ASM available under the Apache 2 licence.
+
+For documentation and details of usage please see http://pitest.org
+
+Acknowledgements
+
+PIT is largely the original work of Henry Coles, but includes the following code from third party sources. 
+
+* A line coverage implementation partially derived from http://code.google.com/p/javacoveragent/  (Apache 2 licensed).
+* A base64 encoding implementation by Robert Harder (public domain)
+
+The following people have also contributed to the PIT codebase
+
+Stefan Pendorf - Improved inline consts mutator, member variable mutator and numerous code improvements
+Nicolas Rusconi - Ant Task
+Aidan Morgan - Support for configuration files
+Struan Kerr-Liddell - Improvements to html report
+
+The above list may be out of date, please check commit history for definitive list of contributors.
+
+Although PIT does not incorporate any code from the Jumble project (http://jumble.sourceforge.net/), the Jumble codebase was used as a guide when developing
+some aspects of PIT.
\ No newline at end of file
diff --git a/lucene/licenses/snakeyaml-1.6.jar.sha1 b/lucene/licenses/snakeyaml-1.6.jar.sha1
new file mode 100644
index 0000000..9fbf5c0
--- /dev/null
+++ b/lucene/licenses/snakeyaml-1.6.jar.sha1
@@ -0,0 +1 @@
+a1e23e31c424d566ee27382e373d73a28fdabd88
diff --git a/lucene/licenses/snakeyaml-LICENSE-ASL.txt b/lucene/licenses/snakeyaml-LICENSE-ASL.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/lucene/licenses/snakeyaml-LICENSE-ASL.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/lucene/licenses/snakeyaml-NOTICE.txt b/lucene/licenses/snakeyaml-NOTICE.txt
new file mode 100644
index 0000000..49195f5
--- /dev/null
+++ b/lucene/licenses/snakeyaml-NOTICE.txt
@@ -0,0 +1,26 @@
+SnakeYAML was created in late 2008 with an intention
+to implement a reference YAML parser for Java.
+ 	
+The PRIMARY AUTHORS are (and/or have been):
+ 	
+* Andrey Somov <py4fun@gmail.com>
+* Alexander Maslov
+
+And here is an inevitably incomplete list of MUCH-APPRECIATED CONTRIBUTORS --
+people who have submitted patches, reported bugs, helped
+answer newbie questions, and generally made SnakeYAML that much better:
+
+Kirill Simonov <xi@resolvent.net> - writing the original Python code.
+Ola Bini <ola@ologix.com>
+kirkz at sourceforge
+tailwaggers at sourceforge
+jberry at sourceforge
+jscheid37 at sourceforge
+Red Forks at gmail
+Nathan Sweet
+James Nissel
+Christophe Desguez
+Magne at edb
+infinity0x
+obastard
+Antony Stubbs <antony.stubbs@gmail.com> - JodaTime DateTime Representer 
diff --git a/lucene/test-framework/ivy.xml b/lucene/test-framework/ivy.xml
index 6d55434..25dd2dc 100644
--- a/lucene/test-framework/ivy.xml
+++ b/lucene/test-framework/ivy.xml
@@ -26,15 +26,30 @@
       This is used from build scripts for taskdefs.
       -->
       <conf name="junit4-stdalone" />
+
+      <conf name="pitest-stdalone" />
     </configurations>
 
     <dependencies defaultconf="default">
       <dependency org="org.apache.ant" name="ant" rev="1.8.2" transitive="false" />
       <dependency org="org.apache.ant" name="ant-junit" rev="1.8.2" transitive="false" />
 
-      <dependency org="junit" name="junit" rev="4.10" transitive="false" conf="default->*;junit4-stdalone->*" />
-      <dependency org="com.carrotsearch.randomizedtesting" name="junit4-ant" rev="2.0.0.rc5" transitive="false" conf="default->*;junit4-stdalone->*" />
-      <dependency org="com.carrotsearch.randomizedtesting" name="randomizedtesting-runner" rev="2.0.0.rc5" transitive="false" conf="default->*;junit4-stdalone->*" />
+      <dependency org="junit" name="junit" rev="4.10" transitive="false" conf="default->*;junit4-stdalone->*;pitest-stdalone->*" />
+
+      <dependency org="org.pitest" name="pitest" rev="0.28" conf="default->*;junit4-stdalone->*;pitest-stdalone->*">
+          <exclude name="testng" />
+          <!-- LGPL -->
+          <exclude name="bsh" />
+      </dependency>
+
+      <dependency org="org.pitest" name="pitest-ant" rev="0.28" conf="default->*;junit4-stdalone->*;pitest-stdalone->*">
+          <exclude name="testng" />
+          <!-- LGPL -->
+          <exclude name="bsh" />
+      </dependency>
+
+      <dependency org="com.carrotsearch.randomizedtesting" name="junit4-ant" rev="2.0.0.rc5" transitive="false" conf="default->*;junit4-stdalone->*;pitest-stdalone->*" />
+      <dependency org="com.carrotsearch.randomizedtesting" name="randomizedtesting-runner" rev="2.0.0.rc5" transitive="false" conf="default->*;junit4-stdalone->*;pitest-stdalone->*" />
 
       <exclude org="*" ext="*" matcher="regexp" type="${ivy.exclude.types}"/> 
     </dependencies>
diff --git a/lucene/tools/build.xml b/lucene/tools/build.xml
index 106c2da..60f9c51 100644
--- a/lucene/tools/build.xml
+++ b/lucene/tools/build.xml
@@ -45,4 +45,5 @@
   </target>
 
   <target name="javadocs"/> <!-- to make common-build.xml happy -->
+  <target name="pitest"/> <!-- to make common-build.xml happy -->
 </project>
diff --git a/solr/build.xml b/solr/build.xml
index 5764f7b..c687d8c 100644
--- a/solr/build.xml
+++ b/solr/build.xml
@@ -133,6 +133,8 @@
           depends="test-core, test-contrib"/>
   <target name="test-core" description="Runs the core and solrj unit tests."
           depends="test-solr-core, test-solrj"/>
+  <target name="pitest" description="Validate, then run core, solrj, and contrib unit tests."
+          depends="pitest-core, pitest-contrib"/>
   <target name="compile-test" description="Compile unit tests."
           depends="compile-solr-test-framework, compile-test-solr-core, compile-test-solrj, compile-test-contrib"/>
   <target name="javadocs" description="Calls javadocs-all, javadocs-solrj, and javadocs-test-framework"
@@ -162,6 +164,23 @@
   <target name="test-contrib" description="Run contrib unit tests.">
     <contrib-crawl target="test" failonerror="true"/>
   </target>
+
+  <!-- Pitest targets -->
+  <target name="pitest-core" description="PiTest solr core">
+    <ant dir="core" target="pitest" inheritAll="false">
+      <propertyset refid="uptodate.and.compiled.properties"/>
+    </ant>
+  </target>
+
+  <target name="pitest-solrj" description="PiTest java client">
+    <ant dir="solrj" target="pitest" inheritAll="false">
+      <propertyset refid="uptodate.and.compiled.properties"/>
+    </ant>
+  </target>
+
+  <target name="pitest-contrib" description="Run contrib PiTests.">
+    <contrib-crawl target="pitest" failonerror="false"/>
+  </target>
   
   <!-- test-framework targets -->
   <target name="javadocs-test-framework">
diff --git a/solr/example/build.xml b/solr/example/build.xml
index fdfbe95..91ef7b4 100644
--- a/solr/example/build.xml
+++ b/solr/example/build.xml
@@ -33,6 +33,9 @@
   <target name="compile-core"/>
   <target name="compile-test"/>
 
+  <!-- nothing to cover -->
+  <target name="pitest"/>
+
   <target name="resolve" depends="ivy-availability-check,ivy-fail,ivy-configure">
     <sequential>
     <!-- jetty libs in lib/ -->
diff --git a/solr/example/example-DIH/build.xml b/solr/example/example-DIH/build.xml
index b48b149..fb82edf 100644
--- a/solr/example/example-DIH/build.xml
+++ b/solr/example/example-DIH/build.xml
@@ -35,4 +35,7 @@
   <target name="compile-core"/>
   <target name="compile-test"/>
 
+  <!-- nothing to cover -->
+  <target name="pitest"/>
+
 </project>
-- 
1.7.8.6

