Modified `GeoManager.get_query_set` to reflect changes made for database routing in r12272.
Modified `GeoManager.get_query_set` to reflect changes made for database routing in r12272.


git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@12275 bcc190cf-cafb-0310-a4f2-bffc1f526a37

t11e/django,t11e/django,t11e/django