I second this (rather old) wish. I've been bitten by it today when installing udev on my laptop and bind-mounting /udev (which is itself a tmpfs mount) over /dev. To get around it, I renamed /etc/rcS.d/S35devpts.sh to .../S38devpts.sh (and did a few other things which aren't relevant here).
(libc 2.3.2ds1-10, FWIW.) -- | Darren Salt | linux (or ds) at | nr. Ashington, | woody, sarge, | youmustbejoking | Northumberland | RISC OS | demon co uk | Toon Army | <URL:http://www.youmustbejoking.demon.co.uk/> (PGP 2.6, GPG keys) When a hammer is the only tool, every problem looks like a nail.