update from John Gilmore for gcc

update from John Gilmore for gcc

SCCS-vsn: usr.bin/pascal/libpc/SIN.c 1.2
SCCS-vsn: usr.bin/pascal/libpc/ATAN.c 1.2
SCCS-vsn: usr.bin/pascal/libpc/CHR.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/COS.c 1.2
SCCS-vsn: usr.bin/pascal/libpc/CTTOT.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/EXP.c 1.2
SCCS-vsn: usr.bin/pascal/libpc/FNIL.c 1.4
SCCS-vsn: usr.bin/pascal/libpc/LN.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/MAX.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/NAM.c 1.4
SCCS-vsn: usr.bin/pascal/libpc/NIL.c 1.4
SCCS-vsn: usr.bin/pascal/libpc/PRED.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/RANG4.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/READ4.c 1.9
SCCS-vsn: usr.bin/pascal/libpc/READ8.c 1.10
SCCS-vsn: usr.bin/pascal/libpc/READC.c 1.3
SCCS-vsn: usr.bin/pascal/libpc/READE.c 1.7
SCCS-vsn: usr.bin/pascal/libpc/RSNG4.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/SQRT.c 1.4
SCCS-vsn: usr.bin/pascal/libpc/SUBSC.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/SUBSCZ.c 1.5
SCCS-vsn: usr.bin/pascal/libpc/SUCC.c 1.5