[MacPorts] #47958: plplot @5.10.0_3: update to 5.11.0

[MacPorts]

#47958: plplot @5.10.0_3: update to 5.11.0
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  Reporter:  mschamschula@…  |      Owner:  takeshi@…
      Type:  update          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:  haspatch
      Port:  plplot          |
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Comment (by takeshi@…):

 I am going to see one of the developer of GDL in person on Monday. After
 that I'll decide if I should split plplot or not.

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Ticket URL: <https://trac.macports.org/ticket/47958#comment:9>
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