[Pidgin] #2617: Supply hints to UI so that it may make windows properly transient

[Pidgin]

#2617: Supply hints to UI so that it may make windows properly transient
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 Reporter:  nix_nix       |       Type:  patch
   Status:  new           |   Priority:  minor
Component:  pidgin (gtk)  |    Version:  2.1.0
 Keywords:                |    Pending:  0    
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 This patch covers the purple_request_* framework, as well as Pidgin-only
 windows. In essence, make sure that windows are properly "strung together"
 using gtk_window_set_transient_for(). purple_notify_* is not (yet)
 covered.

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Ticket URL: <http://developer.pidgin.im/ticket/2617>
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