[Pidgin] #9703: add a GHashTable cache for conversations to speed up find_conversation_with_account

[Pidgin]

#9703: add a GHashTable cache for conversations to speed up
find_conversation_with_account
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Reporter:  tmm1   |        Type:  patch    
  Status:  new    |   Component:  libpurple
 Version:  2.5.8  |    Keywords:           
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 conversations are stored as a linked list, which makes
 purple_find_conversation_with_account very expensive when you have a lot
 of conversations

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Ticket URL: <http://developer.pidgin.im/ticket/9703>
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