[MacPorts] #34891: swig: subports do not respect build_arch

[MacPorts]

#34891: swig: subports do not respect build_arch
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  Reporter:  ryandesign@…  |      Owner:  michaelld@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.1.1
Resolution:                |   Keywords:
      Port:  swig          |
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Comment (by egall@…):

 Also another example of this is swig-clisp, which is x86_64, even though
 its dependency clisp is only ppc/i386

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Ticket URL: <https://trac.macports.org/ticket/34891#comment:6>
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