When calling User.get_profile(), we now tell the profile object about the
related User object right away. This can save a database lookup later if
something in the user profile object wants to refer to the user object.

Patch from Mike Malone.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@9152 bcc190cf-cafb-0310-a4f2-bffc1f526a37