specify ZMQ_USE on all platforms
specify ZMQ_USE on all platforms

- kqueue on bsd-ish
- epoll on linux
- select on Windows
- poll everywhere else (may be incorrect some places)

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