[MacPorts] #33410: samtools @0.1.17 fix - respect build_arch

[MacPorts]

#33410: samtools @0.1.17 fix - respect build_arch
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 Reporter:  mg13@…             |       Owner:  macports-tickets@…                   
     Type:  defect             |      Status:  new                                  
 Priority:  Normal             |   Milestone:                                       
Component:  ports              |     Version:                                       
 Keywords:                     |        Port:  samtools                             
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Comment(by ryandesign@…):

 I agree, that does look very hacky, and I would look for a different way
 to do it that is more similar to the way we've done it in other ports. At
 the same time, adding support for a universal variant would be a good
 idea. The `[get_canonical_archflags]` procedure will likely be useful.

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Ticket URL: <https://trac.macports.org/ticket/33410#comment:1>
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