[MacPorts] #16582: Updated swi-prolog portfile for version 5.6.60

[MacPorts]

#16582: Updated swi-prolog portfile for version 5.6.60
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  Reporter:  pmoura at logtalk.org  |       Owner:  macports-tickets at lists.macosforge.org
      Type:  enhancement         |      Status:  new                                  
  Priority:  Normal              |   Milestone:  Port Updates                         
 Component:  ports               |     Version:  1.6.0                                
Resolution:                      |    Keywords:                                       
      Port:                      |  
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Comment(by pmoura at logtalk.org):

 Updated diff file to add support for live checking.

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Ticket URL: <http://trac.macports.org/ticket/16582#comment:1>
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