[MacPorts] #34124: openal: update to latest version

[MacPorts]

#34124: openal: update to latest version
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 Reporter:  snc@…             |       Owner:  macports-tickets@…                   
     Type:  defect            |      Status:  new                                  
 Priority:  Normal            |   Milestone:                                       
Component:  ports             |     Version:                                       
 Keywords:                    |        Port:  openal                               
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Comment(by computers57@…):

 I believe the OpenAL version used by Ubuntu and other Unices is alsoft,
 whereas OS X uses a specific Mac port that only shares the OpenAL headers.
 Although there is a CoreAudio backend to alsoft.

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Ticket URL: <https://trac.macports.org/ticket/34124#comment:4>
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