udevd: add rm control to prevent hanging

add udevd to default services

bundle udevd

add compatibility for existing users

rc.local.start: make sure to run /etc/rc.local only once

+x

runit-artix: move rc.local and rc.shutdown to sysconfdir

 ctrlaltdel: trigger a reboot properly.

/run/runit/{stopit,reboot} should have their perms set to 100 by
ctrlaltdel, before runit signals itself with SIGCONT, in order to
trigger a reboot. This script can be changed by a user to perform
different actions. The comments in it explain what each file is for.

Patch created for Void, imported to Artix.

don't install rc.local -- let users create their own

better message