[MacPorts] #22557: MacPorts base should verify build_arch has a sensible value

[MacPorts]

#22557: MacPorts base should verify build_arch has a sensible value
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 Reporter:  ryandesign@…             |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:  MacPorts Future                      
Component:  base                     |     Version:  1.8.1                                
 Keywords:                           |        Port:                                       
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Comment(by snc@…):

 Attached is testing for the buildarch in a list of the four sensible
 architectures.

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Ticket URL: <http://trac.macports.org/ticket/22557#comment:3>
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