Module Name:	src
Committed By:	jonathan
Date:		Sun Nov 29 03:18:32 UTC 1998

Modified Files:
	src/sys/arch/mips/include: pmap.h
	src/sys/arch/mips/mips: pmap.c
Log Message:
Add PV_REFERENCED and track as for PV_MODIFIED,.

UVM relies on pmap modules keeping track of modified/referenced bits
after a page has been removed from all mappings.  So *dont* clear
PV_REFERENCED or PV_MODIFIED flags in pmap_remove().