1) Download PyZMQ 14.5 tar sources from:
    https://pypi.python.org/pypi/pyzmq/14.5.0

2) Run:
    tar -xzf pyzmq-14.5.0.tar.gz
    cd pyzmq-14.5.0
    python setup.py clean -a
    python setup.py build --zmq=bundled

3) Put produced files in proper directory under external_libs/pyzmq-14.5.0
4) Update if needed Python scripts to look at new directory (grep pyzmq-14.5.0)

