Monkey-patch subprocess.check_output.

To be removed as soon as OpenShift supports Python 2.7.
Fix a probable bug in file_process_pr
Add uncrustify to PATH in pre_start script.
Minor fixes
Add workaround for GIT_DIR environment variable issue.
Minor tweaks to git output.
Fix NULL-byte problem with shlex/subprocess.check_output.
Fix GIT_DIR workaround to also work locally. Add some TODO items.
Update Readmes