Negligible formatting improvement to an error in management/sql.py

        raise CommandError("Django doesn't know which syntax to use for your SQL statements,\n" +

            "because you haven't specified the ENGINE setting for the database.\n" +

            "Edit your settings file and change DATBASES['default']['ENGINE'] to something like\n" +

            "'django.db.backends.postgresql' or 'django.db.backends.mysql'")

            "'django.db.backends.postgresql' or 'django.db.backends.mysql'.")

    # Get installed models, so we generate REFERENCES right.

    # We trim models from the current app so that the sqlreset command does not