Fixed #7786 -- Removed some tests from running when using Python 2.3.
Fixed #7786 -- Removed some tests from running when using Python 2.3.

The problem being "hidden" here is not serious. It won't affect correct code
and only gives a different failure mode for incorrect code. The moral is: don't
write incorrect code.

--HG--
extra : convert_revision : svn%3Abcc190cf-cafb-0310-a4f2-bffc1f526a37/django/trunk%407939

Belgabor/django,Belgabor/django,Belgabor/django