merge 3.20.9 into 3.21
Fix conflict in unittest_postgres.py by changing sources configuration
in PostgresTimeoutConfiguration.__init__ so it happens *after*
setUpModule().
# -*- 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 specific hooks and operations"""