[MacPorts] #53784: Add support for tapi-tbd-v2

[MacPorts]

#53784: Add support for tapi-tbd-v2
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  Reporter:  jtalle       |      Owner:  jeremyhu
      Type:  defect       |     Status:  reopened
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  ld64-latest  |
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Comment (by kencu):

 FYI, see <https://reviews.llvm.org/D53945> and
 <http://lists.llvm.org/pipermail/llvm-dev/2019-March/130819.html>

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Ticket URL: <https://trac.macports.org/ticket/53784#comment:15>
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