prefix "tcp://" zmq uris with "zmqpickle" (closes #2574114)
* it turns "tcp://" into "zmqpickle-tcp://"
* will leave room for future non-pickling communications using zmq
#! /bin/sh -e#if [ "$1" = remove -o "$1" = upgrade ]; then if which install-docs >/dev/null 2>&1; then install-docs -r cubicweb-doc fifi#DEBHELPER#exit 0