[Pidgin] #4844: [patch] update purple_prefs_* perl bindings

[Pidgin]

#4844: [patch] update purple_prefs_* perl bindings
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 Reporter:  zdeqb             |       Type:  patch
   Status:  new               |   Priority:  minor
Component:  plugins           |    Version:  2.3.1
 Keywords:  perl prefs patch  |    Pending:  0    
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 This patch adds perl bindings for all the missing functions from prefs.h,
 specifically:
  purple_prefs_{get,set,add}_path(),
  purple_prefs_{get,set,add}_path_list(),
  purple_prefs_disconnect_callback(),
  purple_prefs_get_children_names(),
  purple_prefs_disconnect_by_handle()

 It also adds support for using purple_prefs_connect_callback() from
 perl.

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Ticket URL: <http://developer.pidgin.im/ticket/4844>
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