Revisit 1985 entries

Updated the README.md files.

Renamed shapiro/shapiro.orig.c -> shapiro/shapiro.alt.c. This is one of
the exceptions where we have the alt version as this alt version is not
actually in the archive tarball (there are other exceptions for various
reasons).

1985/sicherman/Makefile

@@ -182,8 +182,7 @@ all: ${DATA} ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: This entry will not compile when using clang because it does not support"
-	@echo "      -traditional-cpp but it should compile with gcc."
+	@echo "NOTE: NOTE: this entry requires a compiler that supports -traditional-cpp."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable