problems noted by fgsch@ and deraadt@

original commit was done?)

pointed out by todd@

ok, deraadt@

Tested by various people on various platforms, I'm willing to fix any
breakage this causes.
ok niels@ deraadt@ and mickey@ (after his comments were applied)

make -> ${MAKE}
add phony targets
remove unnecessary subshells
install kernel in a separate target from building.
some SUDO.
okay deraadt@
(checked bootstrap on i386, should be safe elsewhere, and trivial to fix
anyways)

As a bonus, we do not need awk(1) anymore to run MAKEDEV.
ok deraadt@

order a few places
provide '[ "$DEBUG" ] && set -x' inside R() for debugging help ..

fix my previously bogus MAKEDEVs.
If you used pf on a non-i386. the major device number has changed,
and you'll need to recreate /dev/pf
ok theo

licence in a way that makes ipf not free according to the rules we
established over 5 years ago, at www.openbsd.org/goals.html (and those
same basic rules govern the other *BSD projects too).  Specifically,
Darren says that modified versions are not permitted.  But software
which OpenBSD uses and redistributes must be free to all (be they
people or companies), for any purpose they wish to use it, including
modification, use, peeing on, or even integration into baby mulching
machines or atomic bombs to be dropped on Australia.  Furthermore, we
know of a number of companies using ipf with modification like us, who
are now in the same situation, and we hope that some of them will work
with us to fill this gap that now exists in OpenBSD (temporarily, we
hope).

in some MAKEDEVs, will see to them in a separate commit.

/var/spool/lock becomes uucp.dialer, mode 1775, and serial devices
become uucp.dialer, mode 660.
(A couple of "dead" MAKEDEVs have been updated because they conformed the
the old permission scheme, while others have not because they didn't.)