[Pidgin] #10986: Support XMPP MUC history backlog control

[Pidgin]

#10986: Support XMPP MUC history backlog control
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 Reporter:  Zash         |        Owner:  deryni
     Type:  enhancement  |       Status:  new   
Milestone:               |    Component:  XMPP  
  Version:  2.6.4        |   Resolution:        
 Keywords:  muc history  |  
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Comment(by xnyhps):

 I attached a patch to do the libpurple part of this, for #a14219. Maybe
 Pidgin wants an interface to configure it, or only request the messages
 that are necessary, but as I have no experience with Gtk I'll leave that
 for someone else.

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Ticket URL: <http://developer.pidgin.im/ticket/10986#comment:2>
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