[MacPorts] #29263: Add CELT audio codec to ports

[MacPorts]

#29263: Add CELT audio codec to ports
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 Reporter:  wiking@…          |       Owner:  macports-tickets@…                   
     Type:  submission        |      Status:  new                                  
 Priority:  Normal            |   Milestone:                                       
Component:  ports             |     Version:  1.9.2                                
 Keywords:                    |        Port:  celt                                 
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Changes (by raimue@…):

 * cc: raimue@… (added)
  * port:  => celt


Comment:

 Please add the `license` option to new submissions.

 I think it shouldn't be necessary to escape `${prefix}` in
 `configure.args`. It doesn't matter if we do the expansion in the Portfile
 or in the configure script.

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Ticket URL: <https://trac.macports.org/ticket/29263#comment:1>
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