Fixed #9686 -- SpatiaLite is now a supported spatial database backend. Thanks...

Fixed #9686 -- SpatiaLite is now a supported spatial database backend.  Thanks to Matthew Hancher for initial patch and hard work in implementing this feature.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@10222 bcc190cf-cafb-0310-a4f2-bffc1f526a37