Log Message:
Update zeromq to 4.0.5.

0MQ version 4.0.5 stable, released on 2014/10/14
================================================

* Fixed #1191; CURVE mechanism does not verify short term nonces.

* Fixed #1190; stream_engine is vulnerable to downgrade attacks.

* Fixed #1088; assertion failure for WSAENOTSOCK on Windows.

* Fixed #1015; race condition while connecting inproc sockets.

* Fixed #994; bump so library number to 4.0.0

* Fixed #939, assertion failed: !more (fq.cpp:99) after many ZAP requests.

* Fixed #872; lost first part of message over inproc://.

* Fixed #797, keep-alive on Windows.