prevent data loss in running activities

[Marco Pesenti Gritti]

Looks like the new gnome-session is a good candidate:

http://live.gnome.org/SessionManagement/NewGnomeSession
http://svn.gnome.org/viewvc/gnome-session/branches/new-gnome-session/

We can use EggSMClient for activities, it's planned to go in gtk when
it's ready. The dependencies of the server looks sane, except for
libgnomeui which is easy to rip off (and I'm sure it will be made
optional at some point upstream too).

The protocol currently used is XSMP, but there are plans to
additionally support DBus, whenever a protocol is standardized by
freedesktop.

I suggest talking with Lucas Rocha, to verify the timeframe and the
status of his work.

Marco