[MacPorts] #36576: Fixes for ZMQ ports

[MacPorts]

#36576: Fixes for ZMQ ports
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  Reporter:  merijn@…         |      Owner:  and.damore@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.1.2
Resolution:                   |   Keywords:  haspatch maintainer
      Port:  zmq20 zmq zmq22  |
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Comment (by stromnov@…):

 Updated to 3.2.1-RC2 (r99118, actually closes #36662)

 Some notes:
  - zmq port is no longer openmaintained, so it is harder to keep it in
 sync with latest zmq versions
  - zmq-3.x, especially RC1, is incompatible with zmq-2.x on wire level
 (PUSH/PULL, PUB/SUB) (partially fixed in RC2)

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Ticket URL: <https://trac.macports.org/ticket/36576#comment:11>
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