Clean up the YACCing. I don't know why we cannot leave the .y's as .y's.

So lets see if doing so causes anyone trouble.
Also use make(1)'s assistance in using the right file.  It knows the
dependency, so lets just ask it.

gnu/usr.bin/cc/cc1/Makefile

@@ -23,12 +23,10 @@ LDADD+=	${LIBCC_INT}
 c-parse.c c-parse.h: c-parse.in
 	sed -e "/^ifobjc$$/,/^end ifobjc$$/d" \
 	    -e "/^ifc$$/d" -e "/^end ifc$$/d" \
-	    ${GCCDIR}/c-parse.in > c-parse.y
+	    ${.ALLSRC} > c-parse.y
 	${YACC} -d -o c-parse.c c-parse.y
-	mv c-parse.y c-parse.y.out
 
-CLEANFILES+=	c-parse.c c-parse.h \
-		c-parse.y c-parse.y.out		# insurance
+CLEANFILES+=	c-parse.c c-parse.h c-parse.y 		# insurance
 
 #-----------------------------------------------------------------------
 

gnu/usr.bin/cc/cc1obj/Makefile

@@ -23,13 +23,11 @@ LDADD+=	${LIBCC_INT}
 objc-parse.c c-parse.h: c-parse.in
 	sed -e "/^ifc$$/,/^end ifc$$/d" \
 	    -e "/^ifobjc$$/d" -e "/^end ifobjc$$/d" \
-	    ${GCCDIR}/c-parse.in > objc-parse.y
+	    ${.ALLSRC} > objc-parse.y
 	${YACC} -d -o objc-parse.c objc-parse.y
 	mv objc-parse.h c-parse.h
-	mv objc-parse.y objc-parse.y.out
 
-CLEANFILES+=	objc-parse.c c-parse.h \
-		objc-parse.y objc-parse.y.out	# insurance
+CLEANFILES+=	objc-parse.c c-parse.h objc-parse.y 	# insurance
 
 #-----------------------------------------------------------------------
 

gnu/usr.bin/cc/cc1plus/Makefile

@@ -20,7 +20,7 @@ LDADD+=	${LIBCC_INT}
 
 .ORDER: parse.c parse.h
 parse.c parse.h: parse.y
-	${YACC} -d -o parse.c ${GCCDIR}/cp/parse.y
+	${YACC} -d -o parse.c ${.ALLSRC}
 	grep '^#define[   ]*YYEMPTY' parse.c >>parse.h
 
 CLEANFILES+=	parse.c parse.h