[MacPorts] #40044: Add port for liblightgrep

[MacPorts]

#40044: Add port for liblightgrep
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  Reporter:  jessekornblum@…  |      Owner:  macports-tickets@…
      Type:  submission       |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.2.0
Resolution:                   |   Keywords:
      Port:                   |
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Comment (by egall@…):

 First thing I notice: you should probably be using `compiler.blacklist`
 and `compiler.whitelist` instead of manually setting `CC` and `CXX` in the
 build environment.

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Ticket URL: <https://trac.macports.org/ticket/40044#comment:1>
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