[MacPorts] #61594: emacs 27.1_2: configure failed on M1

[MacPorts]

#61594: emacs 27.1_2: configure failed on M1
------------------------+----------------------
  Reporter:  shibukawa  |      Owner:  drkp
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.4
Resolution:             |   Keywords:  arm64
      Port:  emacs      |
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Changes (by mf2k):

 * keywords:   => arm64


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Ticket URL: <https://trac.macports.org/ticket/61594#comment:5>
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