[MacPorts] #53554: parrot: Update to 8.1.0

[MacPorts]

#53554: parrot: Update to 8.1.0
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  Reporter:  ryandesign  |      Owner:  bfulgham@…
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  parrot      |
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Comment (by ryandesign):

 Please update parrot. The current version does not build on El Capitan or
 later; see https://github.com/parrot/parrot/issues/1212. To build the new
 version, parallel building will allegedly have to be disabled.

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Ticket URL: <https://trac.macports.org/ticket/53554#comment:1>
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