[MacPorts] #26993: update doxygen to version 1.7.2

[MacPorts]

#26993: update doxygen to version 1.7.2
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 Reporter:  tvb377@…       |       Owner:  css@…           
     Type:  update         |      Status:  assigned        
 Priority:  Normal         |   Milestone:                  
Component:  ports          |     Version:                  
 Keywords:  haspatch       |        Port:  doxygen         
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Changes (by css@…):

  * status:  new => assigned


Comment:

 I need to update a whole slew of ports in my tree, but I'll verify this
 update tonight.

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Ticket URL: <https://trac.macports.org/ticket/26993#comment:2>
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