Comment 12 for bug 218494

Created an attachment (id=26451)
reworked patch after Ray's review on CK's patch

There are multiple changes which are based on review by Ray Strode,
http://mail.gnome.org/archives/gdm-list/2009-May/msg00007.html

1 Use separate .disp file for display type, remove display-types.conf
  install .disp files to /etc/ConsoleKit/displays.d/,
  each .disp file represent a display type.
2 Only use Command in .disp file, remove Arguments/UseAuth/Chooser/Priority
3 Remove priority code
4 When adding/removing displays, CK should emit signal instead of
  calling GDM method directly
  For org.freedesktop.ConsoleKit.Seat
     add signal SessionToAdd and SessionToRemove
     add method ManageSeat
  For org.freedesktop.ConsoleKit.Manager
     remove method CreateStaticSessions
     add method GetUnmanagedSeats
5 Use a{sv} for dbus method CreateDisplay, since
  task #2 is done, there are only two parameters need to be send with
  signal, this work is not necessary
6 Rewrite ck-dynamic to reflect change in task #4
7 Rewrite ck_display_type_new()
8 Remove method org.freedesktop.ConsoleKit.Manager.ListCreatedSessions.
  Let ck-dynamic do the GetSeats() and filtering dynamic displays itself
9 make ck_seat_add_display(), ck_seat_set_display_type() and ck_seat_get_displ
  return a gbooolean
10 Remove unused create_display_with_parameters()
11 Comments should appear before the lines they're commenting on, not after.
12 Reverse Name and Version back
13 Figure out X11_DIR from pkg-config

This patch is reworked under branch multi-seat by commit 25145f35ab527a2219604e1710eb65e2178f6978