[LightDM] Version 1.0.4 released

[Robert Ancell]

Another stable release...

Overview of changes in lightdm 1.0.4

    * Fix --enable-gtk-greeter=yes not working
    * Fix X sessions with arguments in Exec not working
    * Use previous session for automatic login or if greeter does not request
      one.
    * Correct ownership of ~/.Xauthority if upgrading from buggy version of
      LightDM that had it root owned.
    * Set default resolution of VNC to 1024x768, add settings for width, height,
      depth into lightdm.conf.
    * AppArmor profile: Fix broken gnome-keyring and dbus/gwibber, and quiesce
      annoying kernel audit messages for privileges that we definitively do not
      want to grant.
    * Set LOGNAME environment variable