[MacPorts] #16614: Update Doxygen 1.5.5 to 1.5.6

[MacPorts]

#16614: Update Doxygen 1.5.5 to 1.5.6
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 Reporter:  luis.beca at gmail.com  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  enhancement          |      Status:  new                                  
 Priority:  Normal               |   Milestone:  Port Updates                         
Component:  ports                |     Version:  1.6.0                                
 Keywords:                       |        Port:  1.5.5                                
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 Please update doxygen 1.5.5 to 1.5.6.

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Ticket URL: <http://trac.macports.org/ticket/16614>
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