[devtools] make get_repo_and_cnx return a repoapi ClientConnection
And adjust callers accordingly (they need to use it as a context manager to
open/close it properly).
# -*- 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"""