[MacPorts] #47907: libvpx: update to 1.4.0

[MacPorts]

#47907: libvpx: update to 1.4.0
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  Reporter:  ryandesign@…  |      Owner:  devans@…
      Type:  update        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  haspatch
      Port:  libvpx        |
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Comment (by ryandesign@…):

 Updated files attached.

 I removed the "-clang" lines from patch-configure because they didn't seem
 to be used anywhere else. I removed the parts of the port that cleared the
 universal flags, because that didn't seem to be necessary.

 Successful builds on x86_64 Yosemite (x86_64, and universal x86_64 i386),
 i386 Snow Leopard (universal x86_64 i386 ppc), ppc Leopard (universal ppc
 i386).

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Ticket URL: <https://trac.macports.org/ticket/47907#comment:6>
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