[entity/rset] replace scary warnings about ambiguous rdefs by XXX in the code
users can't do anything about that and shouldn't see those warnings.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s schema"""