Do not add Java manifest in zipped packages

Change-Id: I3a8c2fab17e5902fd892f2b143eec6ac038d61ee
Only build CSharp package if JAVA jar is found

Change-Id: I2389924569c53b1061bff00a4b799cab42fa3101
Merge topic 'SIMPLEITK-376_UseShortPathInZips' into next

daef666 Only build CSharp package if JAVA jar is found
4d863ad Do not add Java manifest in zipped packages