[Pidgin] #5919: Support emoticon sub-themes for each protocol

[Pidgin]

#5919: Support emoticon sub-themes for each protocol
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 Reporter:  andrikos          |       Type:  enhancement
   Status:  new               |   Priority:  minor      
Component:  pidgin (gtk)      |    Version:  2.4.2      
 Keywords:  emoticons themes  |    Pending:  0          
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 Currently the emoticon themes have to be specified for all protocols.
 A better way to do this could be using sub-themes.
 This means that for each protocol a different emoticon theme could be
 used.
 This way we could have for example the original icons in MSN, the default
 pidgin for gtalk, etc.

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Ticket URL: <http://developer.pidgin.im/ticket/5919>
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