Added zmq_socket_monitor to zmq_compat.h
Added zmq_socket_monitor to zmq_compat.h

ArvinPan/pyzmq,caidongyun/pyzmq,yyt030/pyzmq,Mustard-Systems-Ltd/pyzmq,ArvinPan/pyzmq,caidongyun/pyzmq,dash-dash/pyzmq,dash-dash/pyzmq,Mustard-Systems-Ltd/pyzmq,yyt030/pyzmq,dash-dash/pyzmq,swn1/pyzmq,caidongyun/pyzmq,ArvinPan/pyzmq,swn1/pyzmq,swn1/pyzmq,Mustard-Systems-Ltd/pyzmq,yyt030/pyzmq