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

remove() is an ANSI function: rename ours to removetemps()

use pathnames.h to specify full pathnames

fixes for filesystem reorg

wait.h needs param.h (from jim mckie)

add CCI (tahoe) support

Add copyright

dosys(): fork() used instead of vfork() to preserve the parent's
SIGINT handler. This is to fix the core-dump-on-ctrl-C bug.

include fix

pass -J flag through to pc0 so it can handle big case statements

error checks for -t.

add the -t flag to use temporary files elsewhere.

undo deltas to 3.18, so that libraries used with Pascal are
the "usual" ones on sun.

update defaults for -T0 -T2 -T3

ignore warnings returned by pc3.

sun library mods

redefine where all the source directories live (again...)

give more complete error messages when components of pc have fatal errors

pass -w flag to pc3 to suppress warning messages

add pcexterns to resolve outside references in pc3

gprof mods

put in optional path names for -Tn options

run pc2 after /lib/c2; remove /lib/c2 hacks from pc2

update location of pc2 and pc3 for -T option.

change from -lm to -lnm, Kahan's math library.