[MacPorts] #53255: py-gmpy @1.17: Add py36 subport

[MacPorts]

#53255: py-gmpy @1.17: Add py36 subport
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  Reporter:  mndavidoff   |      Owner:
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch maintainer
      Port:  py-gmpy      |
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Changes (by mndavidoff):

 * Attachment "Portfile.diff" added.


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Ticket URL: <https://trac.macports.org/ticket/53255>
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