Fix split files with spaces
Decode comment and file path
Tests now check file path with spaces and octal encoded
Make GitPoller break filenames on newlines

List of changed files was incorrectly splitting on spaces, instead of
just newlines. That was breaking a single file's path into multiple
lines instead of displaying it one just one.
fixed_gitpoller_changes_with_space.patch
Merge branch 'bug2529'

+autopep8
Merge branch 'git_improvements' of git://github.com/Ratio2/buildbot

+autopep8