[MacPorts] #36496: Update to gdal to allow the use of the +mrsid variant

[MacPorts]

#36496: Update to gdal to allow the use of the +mrsid variant
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  Reporter:  jsm@…   |      Owner:  seanasy@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.1.2
Resolution:          |   Keywords:  haspatch
      Port:  gdal    |
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Comment (by macsforever2000@…):

 Replying to [comment:5 venabled@…]:
 > I created a patch which fixes the broken links to the geoexpress-sdk and
 attached it, if anyone is trying to use the +mrsid variant this should
 come in handy.

 [http://guide.macports.org/#development.patches Per the guidelines],
 please instead attach a unified diff of the Portfile vs. trunk so we can
 easily what changes you are proposing.

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Ticket URL: <https://trac.macports.org/ticket/36496#comment:6>
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