magic-removal: Various cleanup and moving, with respect to the recent django.core.db -> django.db move

git-svn-id: http://code.djangoproject.com/svn/django/branches/magic-removal@1637 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/othertests/db_typecasts.py

@@ -1,6 +1,6 @@
-# Unit tests for django.core.db.typecasts
+# Unit tests for typecast functions in django.db.backends.util
 
-from django.core.db import typecasts
+from django.db.backends import util as typecasts
 import datetime
 
 TEST_CASES = {