Deprecate gcl.GetSVNStatus() for gclient.CaptureSVNStatus() and fix some status information that was lost.
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