[MacPorts] #51310: ImageMagick: update to 7.x

[MacPorts]

#51310: ImageMagick: update to 7.x
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  Reporter:  mopihopi     |      Owner:  ryandesign
      Type:  update       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  ImageMagick  |
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Comment (by Dave-Allured):

 New port ImageMagick7 is now available.  All conflicts with the original
 ImageMagick port (ImageMagick version 6) are now avoided by installing new
 files into an isolated ImageMagick7 location. \\
 https://ports.macports.org/port/ImageMagick7/details/

 Since this is an update ticket for IM6 --> IM7, it should now be closed.

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Ticket URL: <https://trac.macports.org/ticket/51310#comment:84>
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