take the pmap_page_protect outside the page queue lock (from hibler)

KNF, and 64-bit safety.

keep track of a few more vmmeter statistics.

convert to use new queue structures

when making copy of a page, make sure original is deactivated
(note we activate first so that deactivate does the right thing)

4.4BSD snapshot (revision 8.1); add 1993 to copyright

pedantically ANSI, i.e., nothing after #else/#endif

attempt to recover from failure of vm_fault in vm_fault_wire

no more page_lock, PG_ABSENT

convert vm_page bit fields to flags

deal with VM_PAGER_ERROR
did a little cleanup and clarified some comments

correct incorrect comment

it is not really a panic, just a thought

new include format

set page clean after vm_pager_get().

fix from Donn Seeley to make shadow pages pageable

vm_stat is merged into vmmeter structure

vm_page_active_count and vm_page_inactive_count move to vm_stat

don't perform the "single use" check, it was broken anyway
pmap_remove_all -> pmap_page_protect

fix includes; new proc struct; rm *_NULL

copyright revision request from CMU

Mike's comments on the copyright notice

update CMU copyright and distribution notice

adopted from Mach 2.5