[MacPorts] #19314: ffmpeg: enable mmx optimizations by default

[MacPorts]

#19314: ffmpeg: enable mmx optimizations by default
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 Reporter:  devans@…             |       Owner:  devans@…           
     Type:  defect               |      Status:  assigned           
 Priority:  Normal               |   Milestone:  Port Bugs          
Component:  ports                |     Version:  1.7.1              
 Keywords:  mmx Intel            |        Port:  ffmpeg             
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Comment(by acho@…):

 Correction, XCode 3.1 is the minimum to build with mmx; cavs did not fail
 to build after applying the patch.

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Ticket URL: <http://trac.macports.org/ticket/19314#comment:5>
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