[MacPorts] #60980: php: add explicit dependency on icu or building without icu

[MacPorts]

#60980: php: add explicit dependency on icu or building without icu
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  Reporter:  blair   |      Owner:  ryandesign
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  php     |
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Comment (by blair):

 See the discussion here also: https://github.com/macports/macports-
 ports/commit/4080d7a1a4421c671eb19141211f7f1b01228149#commitcomment-41309885

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Ticket URL: <https://trac.macports.org/ticket/60980#comment:1>
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