[MacPorts] #15520: upgrade processes the same dep multiple times if different depspecs are used

[MacPorts]

#15520: upgrade processes the same dep multiple times if different depspecs are
used
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  Reporter:  jmr@…             |       Owner:  macports-tickets@…                   
      Type:  defect            |      Status:  closed                               
  Priority:  Low               |   Milestone:  MacPorts 1.7.0                       
 Component:  ports             |     Version:  1.7.0                                
Resolution:  fixed             |    Keywords:                                       
      Port:                    |  
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Changes (by jmr@…):

  * milestone:  MacPorts Future => MacPorts 1.7.0


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Ticket URL: <http://trac.macports.org/ticket/15520#comment:3>
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