[MacPorts] #17767: liboil update to 0.3.15

[MacPorts]

#17767: liboil update to 0.3.15
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 Reporter:  blb@…             |       Owner:  landonf@…           
     Type:  enhancement       |      Status:  new                 
 Priority:  Normal            |   Milestone:  Port Updates        
Component:  ports             |     Version:  1.7.0               
 Keywords:                    |        Port:  liboil              
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Comment(by mcalhoun@…):

 #17769 is a duplicate ticket with more proposed changes.

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Ticket URL: <http://trac.macports.org/ticket/17767#comment:2>
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