ipython/ipython — pull request #1652 by minrk (2012-04-24 00:02:08+00:00)
Title: add patch_pyzmq() for backporting a few changes from newer pyzmq

* fixes missing constants in super-old pyzmq
* define ioloop.install if not defined
* never allow jsonlib to be used by zmq.utils.jsonapi

The last one should close #1520