[MacPorts] #15745: Upgrade lftp to version 3.7.3

[MacPorts]

#15745: Upgrade lftp to version 3.7.3
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  Reporter:  simon at macports.org  |       Owner:  macports-tickets at lists.macosforge.org
      Type:  defect              |      Status:  new                                  
  Priority:  Normal              |   Milestone:  Port Updates                         
 Component:  ports               |     Version:  1.6.0                                
Resolution:                      |    Keywords:                                       
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Changes (by simon at macports.org):

 * cc: yunzheng.hu at gmail.com (added)

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Ticket URL: <http://trac.macports.org/ticket/15745#comment:1>
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