[MacPorts] #20444: Update Fetchmail to latest 6.3.10

[MacPorts]

#20444: Update Fetchmail to latest 6.3.10
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 Reporter:  chenggao@…          |       Owner:  macports-tickets@…                   
     Type:  update              |      Status:  new                                  
 Priority:  Normal              |   Milestone:                                       
Component:  ports               |     Version:  1.7.1                                
 Keywords:                      |        Port:                                       
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 Please see attached diff

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Ticket URL: <http://trac.macports.org/ticket/20444>
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