Description
There are a few files with missing headers (from http://ci.apache.org/projects/avro/rat-output.html):
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/csharp/src/apache/ipc/HttpListenerServer.cs
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/csharp/src/apache/ipc/HttpTransceiver.cs
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/csharp/src/apache/test/Ipc/HttpClientServerTest.cs
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/java/avro/src/main/java/org/apache/avro/util/internal/JacksonUtils.java
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/java/avro/src/test/java/org/apache/avro/util/internal/TestJacksonUtils.java
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/java/tools/src/test/java/org/apache/avro/tool/TestDataFileRepairTool.java
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/java/tools/src/test/java/org/apache/avro/tool/TestTetherTool.java
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/py/ivy.xml
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/py/ivysettings.xml
/home/buildslave3/slave3/avro-trunk-rat-report/build/lang/py/test/set_avro_test_path.py