[MacPorts] #58741: get clang 3.4 and 3.9 4.0 5.0"back"

[MacPorts]

#58741: get clang 3.4 and 3.9 4.0 5.0"back"
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  Reporter:  rmottola             |      Owner:  (none)
      Type:  request              |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:
Resolution:                       |   Keywords:
      Port:  clang-3.9 clang-4.0  |
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Comment (by rmottola):

 4.0 was a bad release for me, no need to get it back.
 3.9 did all what 3.7 did, I only don't know if 3.7 is a needed stepstone
 to actually get a working 3.9? I think to remember yes.

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Ticket URL: <https://trac.macports.org/ticket/58741#comment:5>
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