[MacPorts] #38518: update molmol to support gcc48 variant

[MacPorts]

#38518: update molmol to support gcc48 variant
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  Reporter:  howarth@…  |      Owner:  larryv@…
      Type:  update     |     Status:  closed
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.1.3
Resolution:  fixed      |   Keywords:  haspatch maintainer
      Port:  molmol     |
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Comment (by jmr@…):

 If it needed a rev bump, it would already be built and wouldn't be trying
 to build again. The problem is that molmol-build.diff hardcodes the tiff
 library version.

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Ticket URL: <https://trac.macports.org/ticket/38518#comment:5>
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