[MacPorts] #26782: Portaudio does not build if target is < 10.6

[MacPorts]

#26782: Portaudio does not build if target is < 10.6
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 Reporter:  lasconic@…          |       Owner:  macports-tickets@…                   
     Type:  defect              |      Status:  new                                  
 Priority:  High                |   Milestone:                                       
Component:  ports               |     Version:  1.9.1                                
 Keywords:                      |        Port:  portaudio                            
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 In the current portfile, the patch
 "[http://trac.macports.org/browser/trunk/dports/audio/portaudio/files
 /patch-src__hostapi__coreaudio__pa_mac_core.c patch-
 src__hostapi__coreaudio__pa_mac_core.c]" is applied without condition.
 This patch adds reference to 10.6 only API such as
 [http://developer.apple.com/library/mac/documentation/AudioUnit/Reference/AudioComponentServicesReference/Reference/reference.html#//apple_ref/doc/c_ref/AudioComponentDescription
 AudioComponentDescription].
 If target is 10.4 or 10.5, portaudio port fails to build.

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Ticket URL: <https://trac.macports.org/ticket/26782>
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