[MacPorts] #56141: laszip: add long description

[MacPorts]

#56141: laszip: add long description
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  Veence
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  laszip      |
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Comment (by mf2k):

 I don't like it, but some ports duplicate it in that case:

 {{{
 long_description   $description
 }}}

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Ticket URL: <https://trac.macports.org/ticket/56141#comment:2>
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