Fix issue #763
Merge pull request #766 from hurtonm/master

Fix issue #763
changing zmq_proxy_steerable to not use null terminated strings
Merge pull request #768 from Talksum/master

changing zmq_proxy_steerable to not use null terminated strings
add the NOP mechanism
test_surrogate_curve.cpp works with the NOP mechanism proxy
add mechanism surrogation
first fix to  mechanism surrogation
add test_surrogate_curve.cpp
Merge branch 'nop_mechanism'

Conflicts:
	include/zmq.h
	src/options.cpp
	src/stream_engine.cpp
	tests/test_surrogate_curve.cpp
fix indentation