1988/dale requires -traditional-cpp to compile

Thus one can now enjoy it as long as they have a compiler that supports
it. Unfortunately clang does not but gcc does.

1988/dale/Makefile

@@ -170,6 +170,9 @@ TARGET= ${PROG}
 ALT_OBJ=
 ALT_TARGET=
 
+# FORCE use of -traditional-cpp
+#
+CFLAGS+= -traditional-cpp
 
 #################
 # build the entry
@@ -183,6 +186,7 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
+	@echo "NOTE: this entry requires a compiler that supports -traditional-cpp."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable
@@ -190,10 +194,6 @@ ${PROG}: ${PROG}.c
 alt: data ${ALT_TARGET}
 	@${TRUE}
 
-${PROG}.orig: ${PROG}.orig.c
-	@echo "NOTE: The original source might not compile using modern compilers."
-	${CC} ${CFLAGS} $< -o $@ ${LIBS}
-
 # data files
 #
 data: ${DATA}