[MacPorts] #42860: PyMOL: update to 1.7.0

[MacPorts]

#42860: PyMOL: update to 1.7.0
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  Reporter:  matteo.tiberti@…  |      Owner:  howarth@…
      Type:  update            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.2.1
Resolution:                    |   Keywords:
      Port:  pymol             |
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Comment (by matteo.tiberti@…):

 Here are the modified patches; I started from the already existing ones
 and modified them to comply to the actual code (some lines got moved
 around and some weren't necessary anymore). This builds correctly and
 works ok; however, please take some time to review the commit because it's
 the first time I fiddle with macports and may have overlooked something.

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Ticket URL: <https://trac.macports.org/ticket/42860#comment:5>
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