Disable SELinux in LiveCD

[Robi <robi petranovic gmail com>]

While I was using Fedora 9 Beta (x86_64) GNOME LiveCD, I tried to
change my keyboard layout to Croatian, and got SELinux warning. I
think that configurating SELinux to change keyboard layout can be
pretty frustrating to new users, so my advise is disable it while in
LiveCD mode. As far as I know, the SELinux is really not needed in
LiveCD mode...