[MacPorts] #54549: HexFiend: Update to 2.8.0

[MacPorts]

#54549: HexFiend: Update to 2.8.0
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  Reporter:  sierkb    |      Owner:  neverpanic
      Type:  update    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  hexfiend  |
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Comment (by kencu):

 the sparkle patch will need to be redone, unfortunately. The rest of the
 update was trivial.

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Ticket URL: <https://trac.macports.org/ticket/54549#comment:2>
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