[MacPorts] #30932: avoid using (mono's) /usr/bin/pkg-config on darwin

[MacPorts]

#30932: avoid using (mono's) /usr/bin/pkg-config on darwin
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  Reporter:  adfreed@…         |       Owner:  macports-tickets@…                   
      Type:  enhancement       |      Status:  closed                               
  Priority:  Normal            |   Milestone:  MacPorts 2.1.0                       
 Component:  base              |     Version:  2.0.1                                
Resolution:  fixed             |    Keywords:  haspatch                             
      Port:                    |  
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Comment(by cal@…):

 Has duplicate #34425.

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Ticket URL: <https://trac.macports.org/ticket/30932#comment:16>
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