[MacPorts] #43222: mkvtoolnix: upgrade to version 6.8.0

[MacPorts]

#43222: mkvtoolnix: upgrade to version 6.8.0
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  Reporter:  dgonyier@…  |      Owner:  macports-tickets@…
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  mkvtoolnix  |
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Comment (by pixilla@…):

 Replying to [comment:16 mojca@…]:
 > Replying to [comment:15 pixilla@…]:
 > > Replying to [comment:14 mojca@…]:
 > > > So many patch files seem like an overkill. Why not merging all the
 ruby patches into a single patch file? It will be *a lot* easier to
 maintain.
 > >
 > > I use a script to generate patch files that conform to MP standards of
 patch-path.diff.
 >
 > Can we nonetheless make an exception here?
 Sure, I thought someone might be interested in testing with a newer ruby
 so I shared my quick hack of a patch. You can concat the patches into a
 single file if you like.

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Ticket URL: <https://trac.macports.org/ticket/43222#comment:17>
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