[MacPorts] #31208: sl: Several improvements

[MacPorts]

#31208: sl: Several improvements
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 Reporter:  raimue@…             |       Owner:  pierreetienne.meunier@…        
     Type:  defect               |      Status:  new                            
 Priority:  Normal               |   Milestone:                                 
Component:  ports                |     Version:  2.0.3                          
 Keywords:                       |        Port:                                 
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 Here is a patch for sl. It includes a simplification the way it builds and
 adding a new variant.

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Ticket URL: <https://trac.macports.org/ticket/31208>
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