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

make kernel includes standard

Really set the CR0_EM bit as the comments suggested (from 386bsd).
Delete npxload and npxunload, which are not used. Change npxintr to deliver
a floating point exception vi psignal, rather than a re

Really set the CR0_EM bit as the comments suggested (from 386bsd).
Delete npxload and npxunload, which are not used. Change npxintr to deliver
a floating point exception vi psignal, rather than a recursive call to trap.
This is important since we may have context switched away from the current
owner of the npx. A recent set of changes in locore.s and isu.s guarantee
that this signal will be delivered before executing any more user code in
the affected process, even if it is the current process. Also rearranged
npxdna a little and removed dead code; from Pace Willisson (pace@blitz.com)

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fixes for fp context switching

handle npxdna's correctly, call trap on exceptions, prepare for lazy
context switch (now that we have curpcb)

new copyright; att/bsd/shared

interim version, changes for net2 tape

reno changes

auto conf, bus control, conventions, interrupt control, per host config

date and time created 90/11/08 20:01:31 by bill