Fixed ZMQ.Socket.setRecoveryInterval() to work with v3.0.0 and up.

Changed setLongSockopt to use int for ZMQ_RECOVERY_IVL for v3.0.0 and up.  Modified comment for ZMQ.Socket.setRecoveryInterval() to reflect change to milliseconds for v3.0.0 and up.
Merge pull request #184 from psiolent/master

Fixed ZMQ.Socket.setRecoveryInterval() to work with v3.0.0 and up.