[MacPorts] #46493: Update: cmake 3.1.0

[MacPorts]

#46493: Update: cmake 3.1.0
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  Reporter:  mschamschula@…  |      Owner:  css@…
      Type:  update          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:
Resolution:                  |   Keywords:  haspatch
      Port:  cmake           |
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Comment (by michaelld@…):

 @mojca: I've heard nothing from Chris in a while. I'll go ahead and
 -assume- this is OK. I use CMake extensively, so I have a real interest in
 it working well. I've never used the GUI, but I'm game.

 Can we agree to move the +gui issue to another ticket? I'd like to get
 cmake bumped to 3.1.3 & then we can handle +gui separately.

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Ticket URL: <https://trac.macports.org/ticket/46493#comment:24>
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