[MacPorts] #69267: gcl: new variant: cltl1

[MacPorts]

#69267: gcl: new variant: cltl1
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  Reporter:  binghe       |      Owner:  catap
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.9.1
Resolution:               |   Keywords:
      Port:  gcl          |
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Comment (by binghe):

 Hello, I'm submitting a PR myself to GCL's portfile, to boom the version
 from 2.6.14 to 2.6.15pre17, with the needed variant `cltl1` added.

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Ticket URL: <https://trac.macports.org/ticket/69267#comment:3>
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