[MacPorts] #55905: qgis: Update to 2.18.17

[MacPorts]

#55905: qgis: Update to 2.18.17
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  Reporter:  ryandesign  |      Owner:  Veence
      Type:  update      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:  haspatch
      Port:  qgis        |
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Comment (by Ryan Schmidt <git@…>):

 In [changeset:"4a5bb470565259b502fdc46d9ded9bd5bfc7a054/macports-ports"
 4a5bb470565259b502fdc46d9ded9bd5bfc7a054/macports-ports]:
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="4a5bb470565259b502fdc46d9ded9bd5bfc7a054"
 qgis: Remove conflicting use_parallel_build directives

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

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Ticket URL: <https://trac.macports.org/ticket/55905#comment:5>
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