[MacPorts] #18176: graphviz-gui: create new port for the new Graphviz GUI

[MacPorts]

#18176: graphviz-gui: create new port for the new Graphviz GUI
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 Reporter:  ryandesign@…             |       Owner:  ryandesign@…           
     Type:  enhancement              |      Status:  new                    
 Priority:  Normal                   |   Milestone:  Port Requests          
Component:  ports                    |     Version:  1.7.0                  
 Keywords:                           |        Port:  graphviz-gui           
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 Glen Low of Pixelglow has been working with AT&T to create an updated
 version of his 2004 Graphviz GUI. It currently requires Leopard or above.
 It's included in the Graphviz sources.

 See also #18175 for the graphviz-oldgui port.

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Ticket URL: <http://trac.macports.org/ticket/18176>
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