[MacPorts] #47951: tmux: moved from SF to Github

[MacPorts]

#47951: tmux: moved from SF to Github
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  Reporter:  chunyang@…   |      Owner:  tessarek@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  tmux         |
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Comment (by ryandesign@…):

 Replying to [comment:9 larryv@…]:
 > Depends on where `github.setup` is called. We’ll actually have to handle
 this a bit carefully to get it right. The `github-1.0` portgroup is not
 one of our good ones.

 I consider the github portgroup quite good. It's thoroughly documented in
 the comments in the portgroup file, and it works great, as far as I know.
 If you have problems with it let me know.

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Ticket URL: <https://trac.macports.org/ticket/47951#comment:10>
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