[MacPorts] #69649: Avoid using /usr/bin/patch

[MacPorts]

#69649: Avoid using /usr/bin/patch
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  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.9.1
Resolution:              |   Keywords:
      Port:              |
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Comment (by ryandesign):

 We have already multiple times had port updates committed without removing
 a patch that had been incorporated upstream, with the effect that it was
 reversed, installation succeeded, and once it was discovered the patch had
 to be removed and the port had to be revbumped.

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Ticket URL: <https://trac.macports.org/ticket/69649#comment:3>
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