[1.2.X] Converted get_or_create_regress tests from doctests to unittests. We...

[1.2.X] Converted get_or_create_regress tests from doctests to unittests.  We have always been at war with doctests.  Backport of [14177].

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14178 bcc190cf-cafb-0310-a4f2-bffc1f526a37