[MacPorts] #53097: kchmviewer: upgrade to v7.7 and Qt 5.6

[MacPorts]

#53097: kchmviewer: upgrade to v7.7 and Qt 5.6
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  Reporter:  RJVB        |      Owner:  mkae
      Type:  update      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:  fixed       |   Keywords:  haspatch
      Port:  kchmviewer  |
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Comment (by RJVB):

 What do you mean with

 > - use of qt5.depends_component not yet possible

 That function should be available, I completely forgot to update the PR...

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Ticket URL: <https://trac.macports.org/ticket/53097#comment:4>
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