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

[MacPorts]

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

Comment (by mkae):

 Ah, ok it is [https://github.com/macports/macports-
 ports/commit/8feef8ae2c3550dacc5b68286f2978de5dca1cf8 here]. Sorry for the
 noise. OK, will have to introduce your change then next. Thanks for
 pointing this out!

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Ticket URL: <https://trac.macports.org/ticket/53097#comment:6>
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