[MacPorts] #48252: qt5-mac needs update to 5.5.0

[MacPorts]

#48252: qt5-mac needs update to 5.5.0
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  Reporter:  jake.petroules@…  |      Owner:  mcalhoun@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:
Resolution:                    |   Keywords:
      Port:  qt5-mac           |
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Comment (by rjvbertin@…):

 I cannot vouch for QtWebengine, but it seems the other problems are the
 same ones I ran into with my qt5-kde 5.5.0 port, and for which I
 implemented satisfying fixes.
 Link somewhere above.

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Ticket URL: <https://trac.macports.org/ticket/48252#comment:33>
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