[MacPorts] #43519: msgpack: upgrade to 0.5.8

[MacPorts]

#43519: msgpack: upgrade to 0.5.8
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  Reporter:  nickolas.fotopoulos@…  |      Owner:  hum@…
      Type:  update                 |     Status:  closed
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.2.1
Resolution:  fixed                  |   Keywords:  haspatch
      Port:  msgpack                |
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Comment (by devans@…):

 Replying to [comment:3 hum@…]:
 > Thank you very much for your information. Committed in r119528 to use
 github port group.

 This new version of the port attemps to parse each time portindex is run
 but silently fails to generate an index entry.  Running 'port index' in
 devel/msgpack shows github.setup is setting the port name to msgpack-c.
 {{{
 $ port info --name
 name: msgpack-c
 }}}

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Ticket URL: <https://trac.macports.org/ticket/43519#comment:4>
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