Avoid has_ddl_transactions feature detection if the backend doesn't support transactions in the first place
Avoid has_ddl_transactions feature detection if the backend doesn't support transactions in the first place

--HG--
branch : has-ddl-transaction-feature-detection

nimnull/django-south,RaD/django-south,philipn/django-south,nimnull/django-south,RaD/django-south,philipn/django-south,RaD/django-south