Updated build.xml so that it only packages java files in source distribution.
Updated build.xml so that it only packages java files in source distribution.

queenBNE/javaplex,queenBNE/javaplex,appliedtopology/javaplex,queenBNE/javaplex,queenBNE/javaplex,queenBNE/javaplex,appliedtopology/javaplex,appliedtopology/javaplex,appliedtopology/javaplex,queenBNE/javaplex,appliedtopology/javaplex,appliedtopology/javaplex