[MacPorts] #37320: tbb: add universal variant

[MacPorts]

#37320: tbb: add universal variant
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  Reporter:  ryandesign@…  |      Owner:  mnick@…
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.1.2
Resolution:                |   Keywords:
      Port:  tbb           |
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Comment (by ryandesign@…):

 #23944 is about PowerPC, so no, fixing that is not necessary to fix the
 universal variant, if we're talking about the default i386 x86_64
 universal variant on Snow Leopard and up.

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Ticket URL: <https://trac.macports.org/ticket/37320#comment:5>
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