[multi-db] Fixed dummy backend DatabaseWrapper(): needs to accept settings argument like real backends.

git-svn-id: http://code.djangoproject.com/svn/django/branches/multiple-db-support@3288 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/backends/dummy/base.py

@@ -16,10 +16,14 @@ class DatabaseError(Exception):
     pass
 
 class DatabaseWrapper:
+    
     cursor = complain
     _commit = complain
     _rollback = complain
 
+    def __init__(self, settings):
+        self.settings = settings
+
     def close(self):
         pass # close()