[MacPorts] #41408: xorg-cf-files/imake/xcb: Concat3() macro failure w/ clang with Xcode 5

[MacPorts]

#41408: xorg-cf-files/imake/xcb: Concat3() macro failure w/ clang with Xcode 5
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  Reporter:  ionic@…        |      Owner:  macports-tickets@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.2.1
Resolution:                 |   Keywords:
      Port:  xorg-cf-files  |
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Comment (by ryandesign@…):

 I don't think the solution we want is to blacklist clang.

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Ticket URL: <https://trac.macports.org/ticket/41408#comment:5>
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