[Pidgin] #519: Allow a filtering function in the buddy autocompletion

[Pidgin]

#519: Allow a filtering function in the buddy autocompletion
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  Reporter:  lmfe          |       Owner:     
      Type:  defect        |      Status:  new
  Priority:  minor         |   Milestone:     
 Component:  pidgin (gtk)  |     Version:  2.0
Resolution:                |    Keywords:     
   Pending:  0             |  
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Comment (by lmfe):

 This patch was submitted in SF, but rlaager requested me to split the
 patch.
 Today I have decided to work in this patch again, but I have started the
 work from the beginning, so I'm adding the results one at a time.

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Ticket URL: <http://developer.pidgin.im/ticket/519#comment:1>
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