[MacPorts] #18054: glib2: update to 2.18.4

[MacPorts]

#18054: glib2: update to 2.18.4
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 Reporter:  devans@…             |       Owner:  ryandesign@…           
     Type:  enhancement          |      Status:  assigned               
 Priority:  Normal               |   Milestone:  Port Updates           
Component:  ports                |     Version:  1.7.0                  
 Keywords:                       |        Port:  glib2                  
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Comment(by ryandesign@…):

 Replying to [comment:5 devans@…]:
 > As a separate topic you might want to add a variant to enable gtk-doc in
 case someone wants it.

 Why would someone want it? I don't know what it is.

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Ticket URL: <http://trac.macports.org/ticket/18054#comment:6>
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