The MSBuild task (DotNet 1.6.2 compatible) fails to properly delimit targets and 
properties when multiple targets or properties are specified.

Example
<msbuild>
        <property name="Prop1" value="abc"/>
        <property name="Prop2" value="xyz"/>
</msbuild>

results in -p:Prop1=abcProp2=xyz.  Note the missing semicolon between the Prop1 
and Prop2 name-value pairs.  Patch follows:

Index: MSBuildTask.java
===================================================================
--- MSBuildTask.java    (revision 372335)
+++ MSBuildTask.java    (working copy)
@@ -64,6 +64,9 @@
                 if (!first) {
                     sb.append(";");
                 }
+                else {
+                    first = false;
+                }
                 sb.append(t.getName());
             }
             return new String[]{sb.toString()};
@@ -83,6 +86,9 @@
                 if (!first) {
                     sb.append(";");
                 }
+                else {
+                    first=false;
+                }
                 sb.append(p.getName()).append("=").append(p.getValue());
             }
             return new String[]{sb.toString()};
~