[MacPorts] #34187: cmake: update to 2.8.8

[MacPorts]

#34187: cmake: update to 2.8.8
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 Reporter:  dave@…             |       Owner:  css@…           
     Type:  update             |      Status:  new             
 Priority:  Normal             |   Milestone:                  
Component:  ports              |     Version:                  
 Keywords:                     |        Port:  cmake           
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Comment(by css@…):

 I am traveling without acces to my Mac, so I won't be able to validate any
 changes until next week.

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Ticket URL: <https://trac.macports.org/ticket/34187#comment:2>
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