[MacPorts] #49080: Update pymol to 1.7.7.2 at r4136 and add gcc5 variant

[MacPorts]

#49080: Update pymol to 1.7.7.2 at r4136 and add gcc5 variant
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 Reporter:  howarth.at.macports@…  |      Owner:  macports-tickets@…
     Type:  update                 |     Status:  new
 Priority:  Normal                 |  Milestone:
Component:  ports                  |    Version:  2.3.4
 Keywords:                         |       Port:  pymol
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 The attached Portfile diff updates the pymol package to the latest 1.7.7.2
 release at svn r4136. Support for a gcc5 compiler variant is also added to
 the Portfile.

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Ticket URL: <https://trac.macports.org/ticket/49080>
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