Merge pull request #15 from xexyl/misc

Miscellaneous updates

1984/anonymous/Makefile

@@ -451,6 +451,7 @@ all: ${DATA} ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
+	@echo "NOTE: This entry most likely will not work under macOS."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable

1984/mullender/Makefile

@@ -449,7 +449,7 @@ all: ${DATA} ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry is likely to fail and/or dump core on modern computers"
+	@echo "NOTE: This entry is likely to fail and/or dump core on modern computers."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable