autoconf.c: mountroot kludges that need fixing later
clock.c: two volatile decls
conf.c: stategy()'s return void, *tty[] not tty[], __P()'d xxdump() calls,
add mem_no, *constty[] not &cons.
genassym.c, machdep.c: sys/vmmeter.h needed
intr.c: make kernel writable temporarily in intr_fasttrap()
intr.c: do not use NETISR_ARP
locore.s: icode maps at 0 so do not relocate, don't define __main here.
machdep.c: don't have sysctl.h (yet), use vm_page_free_count for freemem,
setregs() sets pc/npc/stack, note: signal delivery code needs
fixing, add various other NetBSD function stubs.
pmap.c: do kernel_pmap/kernel_pmap_store the old way, delete
vm_page_startup_initialized weirdness.
swapgeneric.c: everything about mountroot needs fixing, help.
trap.c: sunsys -> sun_sysent, etc.
vm_machdep.c: don't use cpu_coredump() for now.
ed575390ee