Cleaned up some print statements. Optimized the code that diffs two files to stop at the first byte that differs instead of always hashing the whole contents of both files. Ensured that the getBundleWithNewVersion properly cleans up on exceptions.

git-svn-id: https://svn.apache.org/repos/asf/ace/trunk@1574933 13f79535-47bb-0310-9956-ffa450edef68