[MacPorts] #29369: gtk3 shouldn't conflict with gtk2

[MacPorts]

#29369: gtk3 shouldn't conflict with gtk2
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 Reporter:  philip.chimento@…          |       Owner:  macports-tickets@…                   
     Type:  defect                     |      Status:  new                                  
 Priority:  Normal                     |   Milestone:                                       
Component:  ports                      |     Version:  1.9.2                                
 Keywords:                             |        Port:  gtk3                                 
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 Is there any particular reason why the portfile for gtk3 lists gtk2 as a
 conflict? Both versions are supposed to be parallel installable according
 to the GTK maintainers. Having them conflict is a big pain for developers
 trying to port a GTK 2 application to GTK 3, or maintain one that builds
 under both versions using a configure switch.

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Ticket URL: <https://trac.macports.org/ticket/29369>
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