[MacPorts] #24927: update: Update highlight Portfile to release 2.16

[MacPorts]

#24927: update: Update highlight Portfile to release 2.16
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 Reporter:  lists@…                    |       Owner:  pjenvey@…          
     Type:  update                     |      Status:  new                
 Priority:  Normal                     |   Milestone:                     
Component:  ports                      |     Version:                     
 Keywords:  haspatch                   |        Port:  highlight          
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Comment(by profjim@…):

 Here is a new patch, that brings highlight from 2.4.8 up to 3.4.0, and
 additionally adds a +perl variant to build the perl bindings from the
 examples/swig subdirectory. (They are needed at least by the IkiWiki
 highlight plugin.)

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Ticket URL: <https://trac.macports.org/ticket/24927#comment:2>
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