[MacPorts] #20051: gnupg2 2.0.11 Package shouldn't have libusb dependency

[MacPorts]

#20051: gnupg2 2.0.11 Package shouldn't have libusb dependency
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  Reporter:              |      Owner:  Ionic
  speed.rob@…            |
      Type:              |     Status:  assigned
  enhancement            |
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  gpg gnupg libusb scdaemon smartcard
      Port:  gnupg2      |  "smart card"
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Comment (by neverpanic):

 I personally use the smartcard feature, and I think with the wider
 availability of cheap smart cards such as, for example, Yubikeys, it
 should stay enabled by default.

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Ticket URL: <https://trac.macports.org/ticket/20051#comment:6>
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