[MacPorts] #58062: tortoisehg: try to (optionally) switch to Qt5

[MacPorts]

#58062: tortoisehg: try to (optionally) switch to Qt5
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 Reporter:  mojca        |      Owner:  seanfarley
     Type:  enhancement  |     Status:  assigned
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  tortoisehg
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 Qt4 is very bad in handling retina display.

 We should try to switch to Qt5, at least on newer OSes.

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Ticket URL: <https://trac.macports.org/ticket/58062>
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