python does not seem to be able to import for a dir with dashes in it.

BUG=none
TEST=Ran git-cl help and verified it worked and new dir was created.

Review URL: http://codereview.chromium.org/3530012

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@61694 0039d316-1c4b-4281-b951-d872f2087c98