[MacPorts] #44500: gdb @7.7.1_1: update to 7.9.1

[MacPorts]

#44500: gdb @7.7.1_1: update to 7.9.1
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  Reporter:  cartasegna.luca@…  |      Owner:  stuartwesterman@…
      Type:  update             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:  haspatch
      Port:  gdb                |
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Comment (by stuartwesterman@…):

 I've attached the diff with the revision line taken out.

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Ticket URL: <https://trac.macports.org/ticket/44500#comment:10>
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