gcl is now fully compatible with msysgit.

BUG=70550
TEST=gcl change through msysgit.

Review URL: http://codereview.chromium.org/6689001

TBR=mhm@chromium.org
Review URL: http://codereview.chromium.org/6679026

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@77929 0039d316-1c4b-4281-b951-d872f2087c98