Contributed by Torsten Becker <torsten.becker@gmail.com>

BUG=
TEST=gclient config 'ssh://user-name@asd.com/~/asd.git' && gclient sync  # fails in SplitUrlRevision

Review URL: http://codereview.chromium.org/4144002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@63877 0039d316-1c4b-4281-b951-d872f2087c98