add definition for ability to produce a backtrace
add simple locking primitives
put in request to unmount all filesystems when rebooting
btodb and dbtob need to work with 64-bit numbers (from karels)
add istty for spec_open
update for new kernel
get rid of unused MINFREE parameter
fix the copyright
copyright typo
entries_pageable set TRUE for buffer map (set vm_map.c change).
add cpu_swapin (nothing needed)
add cpu_set_init_frame to initialize init's syscall frame
add GATEWAY option
return value of sdclose must be 0
change time zone
add KGDB line
sync up to hp300/include/pmap.h 7.13 (Berkeley) 6/2/93
sync up to hp300/include/cpu.h 8.2 (Berkeley) 9/23/93
date and time created 93/12/06 20:36:39 by akito
date and time created 93/12/06 20:36:02 by akito
remove kbdselect (use ttselect)
rename function from scsi_xxxx to sc_xxxx
date and time created 93/12/06 20:28:08 by akito
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