kill all processes in /etc/inittab BEFORE umounting

This is done in /etc/inittab and not in a separate script because the
process which does the "kill -1" needs to have the PID 1, otherwise it
would die trying.

Of course the proper way to do it would be to modify busybox init to
allow for executing code *after* it killed all processes on shutdown,
not just *before* it kills them.  If "umount -ar" is run before
everything is killed, it can fail because programs may still access
files in those mount points.
don't bring down loopback device on shutdown

I'm not convinced that this is necessary
sanitize ($0 -> "$0")
cleaning up
add "all" handler which starts/stops all daemons