prefix "tcp://" zmq uris with "zmqpickle" (closes #2574114)
* it turns "tcp://" into "zmqpickle-tcp://"
* will leave room for future non-pickling communications using zmq
# -*- 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 entity's classes"""