Fixed #13469 -- Cleaned up the test case from r13085, and added some cache...

Fixed #13469 -- Cleaned up the test case from r13085, and added some cache cleanup that matters for Python 2.3. Thanks to Karen and Alex for their help.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@13095 bcc190cf-cafb-0310-a4f2-bffc1f526a37