http://git.openstack.org/cgit/stackforge/sqlalchemy-migrate/commit/?id=21fcdad0f485437d010e5743626c63ab3acdaec5
http:// git.openstack. org/cgit/ stackforge/ sqlalchemy- migrate/ commit/ ?id=21fcdad0f48 5437d010e574362 6c63ab3acdaec5