Add the following features to the begiak svnpoller and git modules:

• "and X files deleted" if files were deleted
• information on a given commit, e.g. "begiak: info apertium r42000" would give a couple lines with detailed commit information, something like
• "n files modified: hargle.x bargle.y"
• "n files added: foo.x bar.y"
• "n files deleted: fooz.x baz.y"
• "commited by new_user_123: hargle bargle blah blar bler"