[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:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  kchmviewer  |
-------------------------+----------------------
Changes (by mkae):

 * status:  new => assigned
 * owner:   => mkae


Comment:

 Running as [https://github.com/macports/macports-ports/pull/110 PR #110]
 on GitHub.

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Ticket URL: <https://trac.macports.org/ticket/53097#comment:1>
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