zmq_term and zmq_ctx_destroy are just aliases for zmq_ctx_term. that
being the case use 'terminate' in the description for all three so there
isn't any confusion about behavior.
also update the deprecates list in zmq_ctx_term to include
zmq_ctx_destroy.
Solution: document this with a clear warning. It would be
nicer perhaps to change the default LINGER to e.g. a few
seconds. However this could break existing applications.
contributors and doesn't reflect the real process. I've taken out all named
authors and referred to the contribution policy. Hopefully this will improve
the contributions to the man pages.
