[MacPorts] #17915: Updated swi-prolog-devel portfile for version 5.7.4

[MacPorts]

#17915: Updated swi-prolog-devel portfile for version 5.7.4
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 Reporter:  pmoura@…            |       Owner:  macports-tickets@…                   
     Type:  enhancement         |      Status:  new                                  
 Priority:  Normal              |   Milestone:  Port Updates                         
Component:  ports               |     Version:  1.7.0                                
 Keywords:                      |        Port:                                       
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 Updated swi-prolog-devel portfile for version 5.7.4.

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Ticket URL: <http://trac.macports.org/ticket/17915>
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