ok guenther millert kettenis

Not sure what's more surprising: how long it took for NetBSD to
catch up to the rest of the BSDs (including UCB), or the amount of
code that NetBSD has claimed for itself without attributing to the
actual authors.
OK deraadt@

and then setting errno to EFAULT.  that is balony programming!  they
should keep stumbling along to purposely create a crash, so that the
programmer stops doing that kind of stupid crap.  ok otto

opendev.h: ok, so I merged it with util.h
opendev.h: use util.h
everything else: use "util.h"

Add cpio.h, tar.h, and re_comp.h headers for POSIX & XPG4 conformance