Fixed #14389, #9666 -- Started the migration path to make the first argument...

Fixed #14389, #9666 -- Started the migration path to make the first argument to url and ssi template tags syntactically consistent with other tags. Thanks to Sean Brant for the draft patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14643 bcc190cf-cafb-0310-a4f2-bffc1f526a37