oggis_ | hey, let's kill the legacy presence interface in gabble
oggis_ | it still advertises and implements it, right?
oggis_ | I noticed that constructing the dbus-glib structures and 
         emitting the signals costs three times as much CPU wise for the 
         same presence updates for the legacy presence IF than the 
         SimplePresence one
oggis_ | so, drop the G_IMPLEMENT_INTERFACE for Conn.I.Presence, gain a 
         4x speedup in presence signal emission (think facebook roster 
         :brr), break ... nobody?
oggis_ | fwiw tp-qt4 hasn't ever implemented any high level API on top of 
         the legacy presence IF, and I don't think anybody has used the 
         low level interface from it for that either
oggis_ | has any version of empathy or anything else we actually care 
         about used the old presence IF?
   wjt | oggis_: tp-glib client side doesn't use it either.
   wjt | oggis_: let's do it. great idea.

I also checked Empathy. It doesn't use it. Branch to follow.