[MacPorts] #64939: Add muniversal PortGroup to libusb

[MacPorts]

#64939: Add muniversal PortGroup to libusb
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  Reporter:  barracuda156  |      Owner:  michaelld
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.2
Resolution:                |   Keywords:  powerpc, leopard, ppc64
      Port:  libusb        |
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Comment (by jmroot):

 Replying to [ticket:64939 barracuda156]:
 > Otherwise `+universal` gets ignored on Leopard.

 That is a very vague statement; you need to describe precisely what the
 expected and actual behaviours were.

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Ticket URL: <https://trac.macports.org/ticket/64939#comment:2>
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