[RFC] reorganizing logout & suspend stuff

[Oswald Buddenhagen]

hi,

yeah, once more $SUBJECT ...

while investigating some problems relating to logout & shutdown, i was
reminded of an interesting anomaly: ksmserver shows the suspend options
only when running under kdm (or another supported display manager),
which is technically completely unnecessary.

the current "leave" menu splits actions into those which affect only the
current session and those which affect the entire system.
however, there is also a second dimension: actions which terminate the
current session and those which don't. organizing by that, one would get
a menu which looks like that:

session ->
  leave
    logout
    reboot
    shutdown
  suspend
    switch user
    lock
    standby
    suspend to ram
    suspend to disk

from ksmserver's perspective, only the first group is interesting.

technicalities aside, it seems weird to have the non-terminating
suspend/standby-related options under the same button as the terminating
power-down, and it poses the question what to do when power-down is not
available as the top-level item.

so ... let the brilliant ideas flow in.

ps: yes, i know that my timing sucks. ;)