[MacPorts] #55905: qgis: Update to 2.18.17

[MacPorts]

#55905: qgis: Update to 2.18.17
-------------------------+----------------------
  Reporter:  ryandesign  |      Owner:  Veence
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  qgis        |
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Changes (by ryandesign):

 * Attachment "Portfile-qgis.diff" added.


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Ticket URL: <https://trac.macports.org/ticket/55905>
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