Fixed #9260: [1.0.X] Correct version calculation code so setup.py works on...

Fixed #9260: [1.0.X] Correct version calculation code so setup.py works on 1.0.X branch.  Thanks for the report Warren.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9109 bcc190cf-cafb-0310-a4f2-bffc1f526a37