[MacPorts] #46881: qlandkartegt: upgrade to 1.8.1

[MacPorts]

#46881: qlandkartegt: upgrade to 1.8.1
---------------------------------+--------------------------------
 Reporter:  michael.klein@…      |      Owner:  macports-tickets@…
     Type:  update               |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:  2.3.3
 Keywords:  haspatch maintainer  |       Port:  qlandkartegt
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 latest upstream + patch cleanup

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Ticket URL: <https://trac.macports.org/ticket/46881>
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