This directory should contain the checkouts/clones (or symlinks to them) that
correspond to the files in the po directory.

This directory should never contain uncommitted changes. Pootle will bring in
changes from the upstream VCS and rely on it succeeding without conflicts.

More information:
http://docs.translatehouse.org/projects/pootle/en/stable-2.5.0/features/version_control.html
