Revert 22561 - Minor change to gcl to automatically put changed files in the changelist (like we do with P4)
R=nsylvain
Review URL: http://codereview.chromium.org/164028

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@22608 0039d316-1c4b-4281-b951-d872f2087c98