If ~/.gitconfig contains:
	[diff]
		renames = "true"
then git diff --name-status will produce output that confuses the parsing
in svm.GIT.CaptureStatus and git diff will produce output that confuses the
patch command on trybots.  Passing --no-renames explicitly counteracts this.

Review URL: https://chromiumcodereview.appspot.com/16057018

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@203778 0039d316-1c4b-4281-b951-d872f2087c98