[MacPorts] #45912: Add py33 and py34 subports

[MacPorts]

#45912: Add py33 and py34 subports
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  Reporter:  taku.fukada@…  |      Owner:  macports-tickets@…
      Type:  enhancement    |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.2
Resolution:                 |   Keywords:
      Port:  py-speaklater  |
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Comment (by petr@…):

 We are in the process of deprecating old python version. This implies that
 only `py27` and `py34`.

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Ticket URL: <https://trac.macports.org/ticket/45912#comment:2>
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