[MacPorts] #19476: gtk2: remove gtk-doc dependency from gtk2, add as variant "with-doc"

[MacPorts]

#19476: gtk2: remove gtk-doc dependency from gtk2, add as variant "with-doc"
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 Reporter:  rukqoa@…            |       Owner:  macports-tickets@…                   
     Type:  enhancement         |      Status:  new                                  
 Priority:  Normal              |   Milestone:                                       
Component:  ports               |     Version:  1.7.1                                
 Keywords:  gtk2, doc, variant  |        Port:  gtk2                                 
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 Seeing that gtk-doc installs a lot of dependencies, such as docbook, perl,
 python..., that are unnecessary for GTK2-based applications, it is added
 as a variant "with-doc" instead of being a default dependency.
 Hopefully should address ticket 14892:
 http://trac.macports.org/ticket/14892

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Ticket URL: <http://trac.macports.org/ticket/19476>
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