* Let ConsoleKit track the current logins instead of pam_console.
Udev now takes care of setting the device permissions to the active
user. This works much better, since pam_console wouldn't apply
permissions to new (hot-plugged) devices. Also, the udev+ConsoleKit
approach supports user switching. (We don't have that for X yet,
but it already works for logins on virtual consoles: if you switch
between different users on differents VCs with Alt+Fn, the device
ownership will be changed automatically.)
svn path=/nixos/trunk/; revision=16743
