[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        |
-------------------------+----------------------

Comment (by Ryan Schmidt <git@…>):

 In [changeset:"0844d0206b5b3271e7dd3bbb48a62c23bc921bf7/macports-ports"
 0844d0206b5b3271e7dd3bbb48a62c23bc921bf7/macports-ports]:
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="0844d0206b5b3271e7dd3bbb48a62c23bc921bf7"
 qgis: Rename placeholder to @PREFIX@

 …from the more ambiguous @@@

 See: https://trac.macports.org/ticket/55905
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/55905#comment:3>
MacPorts <https://www.macports.org/>
Ports system for macOS