[MacPorts] #56039: Upgrade port:QtCurve, fixing QtCurve-qt5

[MacPorts]

#56039: Upgrade port:QtCurve, fixing QtCurve-qt5
----------------------+-------------------------
 Reporter:  RJVB      |      Owner:
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  haspatch  |       Port:  QtCurve-qt5
----------------------+-------------------------
 port:QtCurve-qt5 is still shipping an older version which fails to build
 against Qt 5.9 and newer. Attached is an update which provides the latest
 upstream QtCurve version as well as the current upstream port
 implementation from my macstrop repo.

 Patchfiles and other resources are in the tarball.

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Ticket URL: <https://trac.macports.org/ticket/56039>
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