[MacPorts] #50821: python24, python25, python26, python27, python31, python32, python33, python34, python35: Fix building for strange architecture combinations

[MacPorts]

#50821: python24, python25, python26, python27, python31, python32, python33,
python34, python35: Fix building for strange architecture combinations
-------------------------------------------------+-------------------------
  Reporter:  land.apfel@…                        |      Owner:
                                                 |  jyrkiwahlstedt
      Type:  defect                              |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:  2.3.4
Resolution:                                      |   Keywords:
      Port:  python24, python25, python26,       |
  python27, python31, python32, python33,        |
  python34, python35                             |
-------------------------------------------------+-------------------------

Comment (by kencu):

 the toolchain sometimes does not see ppc and ppc7400 as the same arch.

 I needed to fix that in legacysupport a few years ago.

 #60147

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Ticket URL: <https://trac.macports.org/ticket/50821#comment:8>
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