…or gathering table names.
…tor database backend.
…age_engine a property on its database features class.
…d path to backend, to allow use of engines not packaged with Django.
MultiDbTest.test_basic_queries was failing on my local machine when run with all the other tests, but passed when run by itself. It seems like the problem was that QueryCacheBackend.invalidate was not respecting the "using" kwarg, so it would invalidate the default table when it was supposed to be invalidating the second table.
…cmen & file-based caches.