[MacPorts] #47595: mlt: add universal variant

[MacPorts]

#47595: mlt: add universal variant
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  Reporter:  ryandesign@…  |      Owner:  dan@…
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  mlt           |
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Comment (by dan@…):

 Sorry, but I am not volunteering to fix this. There was a patch submitted
 to the mailing list, interfered with builds for other platforms and it
 looks there is still a lot of changes needed in the build system to
 accommodate it.

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Ticket URL: <https://trac.macports.org/ticket/47595#comment:1>
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