[gdm] (45 commits) Created branch multi-stack

[Ray Strode <halfline src gnome org>]

The branch 'multi-stack' was created.

Summary of new commits:

  5df4d80... Introduce new Conversation object
  e408070... Rename session worker to the service it's managing
  a914187... Make greeter explicitly request PAM conversation
  32e86b6... start autologin conversation when creating session if neces
  ea122f6... Store multiple conversations in the session
  f710815... Propagate service name to more layers
  ef0d8f1... emit "ConversationStopped" signal at end of conv
  18811f7... Add limited support for multiple pam stacks
  fba64d2... Create session settings object when first starting worker
  860e069... Queue a greeter reset when the user clicks cancel
  a1f3135... Add a plugin based extension system to greeter
  8094d63... Force session reset if all PAM conversations fail
  a05f9c2... Add a way for plugins to pick users from list
  0602587... Add new api to ask when chooser widget is done loading item
  a175227... Tell tasks they're ready only after user list loads
  cbaef7f... Add fingerprint plugin
  1e159ae... Add smartcard plugin
  5ba7fbd... Add a new "choosable" property to show tasks in user list
  9cd27be... Separate handling of non-users in user list from users
  cae0648... Initiate smart card auth when clicking on it in list
  89f9325... Only show task list if user is selected
  919c58b... Pull verification functions out into their own subroutines
  114b9be... Notify plugins if their user choose requests fail
  aaa059c... reset all conversations if password conversation fails
  b5b16b9... When one PAM conversation wins, stop the others
  7843a65... KILL pam stack instead of TERM pam stack
  7dd5a90... Don't show tasklist for autologin
  5562e59... Drop the other hiding stuff for now.
  4069e5b... Prevent start session signal handler from getting called mu
  eaede12... Don't show unimportant images on plugin buttons
  e3ad31f... Add visibility concept to task iface
  0d607bd... adapt fingerprint to task iface
  8e609a7... adapt smartcard plugin to task iface
  122d3d0... adapt password to task iface
  32c4cb5... Return a different error code for "service won't work" than
  0ca589b... Emit "service-unavailable" from session when pam service re
  3ce57b1... Bubble service-unavailable up to greeter
  7514ee2... Catch service-unavailable from server in client and propaga
  593c7ec... Add gdm_task_list_remove_task
  a6ce9f2... Remove task from task list if unavailable
  949b12b... Don't add task to UI if it's invisible
  baa7dae... add lame check to see if fingerprint is enabled
  2c41cf9... don't activate invisible tasks
  9f97661... Add lame check for smart card daemon
  397a9d2... Don't delay login for passwd -d users