sick of the CMU, let's make this KNF

Do not expose private functions.

Kill trailing whitespaces. No object change.

Remove some includes include-what-you-use claims don't
have any direct symbols used. Tested for indirect use by compiling
amd64/i386/sparc64 kernels.

ok tedu@ deraadt@

remove uneeded proc.h includes
ok mpi@ kspillner@

These do not need the extremely poorly named uvm/uvm_extern.h (which
pulls in the universe). occasionally they need sys/systm.h

ansi/deregister. No binary change.

Don't let variable declarations without "extern" living in .h files.
While there fix a benign type mismatch in db_stack_dump() and remove
diag code left by art by mistake.

Replace inclusion of <vm/foo.h> with the correct <uvm/bar.h> when necessary.
(Look ma, I might have broken the tree)

Include vm/vm.h everywhere it is needed to get at boolean_t (I would prefer
to have it in sys/types.h but that is problematic). Some KNF.

move db_radix to the db_output.c, where all the vars are.
some preliminary support for kernfs&syms&~ddb

partial sync with netbsd 960418, more to come

Debbuger changed towards the latest Mach.
Some minor changes for Linux ;) emulation.
Small bug fixes from NetBSD.

netbsd-current import & 'boot' cmd addition.

initial import of NetBSD tree