[Pidgin] #9630: Abstract Blist Saving

[Pidgin]

#9630: Abstract Blist Saving
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 Reporter:  hanzz                   |        Owner:           
     Type:  patch                   |       Status:  new      
Milestone:  Patches Needing Review  |    Component:  libpurple
  Version:  2.5.8                   |   Resolution:           
 Keywords:                          |  
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Comment(by darkrain42):

 Could you please review the attached patch and make sure it looks good
 (and will work for you)?

 I know we initially recommended you split the functionality out into a
 separate file, which I think turned out to be a poor suggestion (sorry!).
 I've consolidated everything into minimal changes as much as I can because
 there are two other SoC projects (Sulabh's privacy workings and Eric's
 GObjectification) that are modifying a bunch of the same code, and I'm
 going to be yelled at if this patch makes merging with their work too
 difficult.

 Anyway, I've only lightly tested this, so please also make sure I didn't
 muck up the saving callbacks.

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Ticket URL: <http://developer.pidgin.im/ticket/9630#comment:5>
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