[Pidgin] #295: use GTK's tab reordering if available

[Pidgin]

#295: use GTK's tab reordering if available
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  Reporter:  elreydetodo   |       Owner:  seanegan
      Type:  enhancement   |      Status:  new     
  Priority:  minor         |   Milestone:          
 Component:  pidgin (gtk)  |     Version:  2.0     
Resolution:                |    Keywords:          
   Pending:  0             |  
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Comment (by rlaager):

 I would argue, without looking at the actual diff, that we should accept
 this because it'll allow us to rip out all the old code at some point.

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Ticket URL: <http://developer.pidgin.im/ticket/295#comment:6>
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