something that was on trunk, svn info only knows about it when it's ref by trunk
url).

Also added an author override, useful for webkit merges or double reverts

Review URL: http://codereview.chromium.org/551137

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@37024 0039d316-1c4b-4281-b951-d872f2087c98