[MacPorts] #59515: [icu] : support building with llvm-ar

[MacPorts]

#59515: [icu] : support building with llvm-ar
--------------------------+----------------------
  Reporter:  RJVB         |      Owner:  kencu
      Type:  enhancement  |     Status:  accepted
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  icu          |
--------------------------+----------------------
Changes (by kencu):

 * status:  new => accepted
 * owner:  (none) => kencu


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Ticket URL: <https://trac.macports.org/ticket/59515#comment:4>
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