[MacPorts] #32031: p5-pdl: update to 2.4.9

[MacPorts]

#32031: p5-pdl: update to 2.4.9
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 Reporter:  punk.kish@…          |       Owner:  tim@…         
     Type:  update               |      Status:  new           
 Priority:  Normal               |   Milestone:                
Component:  ports                |     Version:                
 Keywords:                       |        Port:  p5-pdl        
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Comment(by punk.kish@…):

 I am wondering, if I want to tackle this task, how do I go about learning
 the ins and outs of it? I am assuming I would have to learn the basics of
 the portfile system, and then figure out what portions of the existing
 portfile would have to be upgraded. What is the best way to proceed?

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Ticket URL: <https://trac.macports.org/ticket/32031#comment:2>
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