[gdm] (21 commits) Created branch multi-stack

[Ray Strode <halfline src gnome org>]

The branch 'multi-stack' was created.

Summary of new commits:

  5c6cf46... Add user chooser to ui file
  f076376... Add new api to ask when chooser widget is done loading item
  4e4a368... Create session settings object up front
  328c30c... Introduce new Conversation object
  9652be0... Rename session worker to the service it's managing
  2383a49... Make greeter/autologin session explicitly request PAM conve
  1fbcd7c... Store multiple conversations in the session
  2d106e3... Return a different error code for "service won't work" than
  d6f4793... Emit "service-unavailable" from session when pam service re
  91b5ac2... Bubble service-unavailable up to greeter
  fe9d7b4... Catch service-unavailable from server in client and propaga
  2491fea... Queue a greeter reset when the user clicks cancel
  6ccb3a6... Don't delay login for passwd -d users
  d3d0db7... Add a plugin based extension system to greeter
  fd534bb... Show cancel button after first message
  5737c18... Prevent start session signal handler from getting called mu
  59100e6... Add fingerprint plugin
  de687b2... Add smartcard plugin
  13b5ba9... When one PAM conversation wins, stop the others
  788fc29... KILL pam stack instead of TERM pam stack
  8e83c35... Drop the other hiding stuff for now.