[MacPorts] #71149: libomp @19.1.2 fails to configure on < 10.15

[MacPorts]

#71149: libomp @19.1.2 fails to configure on < 10.15
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  Reporter:  jmroot  |      Owner:  eborisch
      Type:  defect  |     Status:  assigned
  Priority:  High    |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  libomp  |
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Comment (by jmroot):

 Use python310 for now? We might end up needing some new bootstrap port
 somewhere to break the cycle.

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Ticket URL: <https://trac.macports.org/ticket/71149#comment:5>
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