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

new include location

add --main for gcc2

make kernel includes standard

attempt to make compile with new hierarchy and recent vm changes;
These changes are as yet untested

break up I/O routines into separate modules

various cleanups; new copyright; att/bsd/shared

made SMALL smaller for i386 & obese disklabels, minor errata

kernel reorg

typo "&" -> "&&"

avoid recursive invocation of _stop

do not need includes

update to use dinode.h instead of inode.h

specify pathnames for includes

clever isdigit/isupper macros; from Chris

many changes/cleanups; change to dev(a,b,c,d) format

uvax changes; fix devsw index in confxx; header updates

squish

fix up more error messages

pack labels; various cleanups: open returns failure instead of stopping

4.3BSD release version

so much cleaning: make skip-sector work in formatter, clean up
ioctls for formatting options, make boothp small enough to fit,
configure 9766's properly (sorry, 9300's!), don't use _exit from libc

faster read; other stuff for later

allow more units for second sbi (untested in rest of code)

Add copyright