[1.2.X] Converted or_lookups tests from doctests to unittests. We have always...

[1.2.X] Converted or_lookups tests from doctests to unittests.  We have always been at war with doctests.  Thanks to Paul Tax for the patch.  Backport of [14236].

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14237 bcc190cf-cafb-0310-a4f2-bffc1f526a37