This was breaking gclient revert on unversioned files.
TEST=ran "for %a in (tests\*test.py) do python %a" and all tests succeeded.
Review URL: http://codereview.chromium.org/115264
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@15894 0039d316-1c4b-4281-b951-d872f2087c98
Add gcl's first unit test.
Add version string.
Review URL: http://codereview.chromium.org/100095
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@14771 0039d316-1c4b-4281-b951-d872f2087c98