Move vendored libraries to vendor directory

vendor/sqlalchemy/testing/suite/__init__.py

@@ -0,0 +1,8 @@
+
+from sqlalchemy.testing.suite.test_ddl import *
+from sqlalchemy.testing.suite.test_insert import *
+from sqlalchemy.testing.suite.test_sequence import *
+from sqlalchemy.testing.suite.test_results import *
+from sqlalchemy.testing.suite.test_update_delete import *
+from sqlalchemy.testing.suite.test_reflection import *
+from sqlalchemy.testing.suite.test_types import *