[MacPorts] #26568: Updated yap portfile

[MacPorts]

#26568: Updated yap portfile
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 Reporter:  pmoura@…             |       Owner:  macports-tickets@…                   
     Type:  update               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  ports                |     Version:  1.9.1                                
 Keywords:  haspatch maintainer  |        Port:  yap-devel                            
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 Added some of the most used variants to the portfile. Changes the default
 variants as the threads one is currently broken.

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Ticket URL: <https://trac.macports.org/ticket/26568>
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