don't include the source files in the jar

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10599 387891d4-d844-0410-90c0-e4c51a9137d3
more work on integrating innoextract

git-svn-id: svn://svn.icculus.org/fs2open/trunk@10600 387891d4-d844-0410-90c0-e4c51a9137d3