[MacPorts] #50847: Update llvm-38 to release tarball, remove subversion dependency

[MacPorts]

#50847: Update llvm-38 to release tarball, remove subversion dependency
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  Reporter:  sierkb@…  |      Owner:  jeremyhu@…
      Type:  update    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.4
Resolution:            |   Keywords:
      Port:  llvm-38   |
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Comment (by jeremyhu@…):

 The only extra patch that I care about is the change for
 https://llvm.org/bugs/show_bug.cgi?id=19422

 If you want to provide a patch to the port that makes the changes and
 includes that upstream change, it would certainly help.  I am swamped with
 other work and won't likely get to this for some time.

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Ticket URL: <https://trac.macports.org/ticket/50847#comment:4>
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