restore pre-fixed code to 1992/albert

It appears that the archive contained the code
that was there before Leo's fix.

Moved Leo's note into the README.md file.

The alt code is now the pre-fixed code.

1992/albert/Makefile

@@ -166,8 +166,8 @@ OBJ= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
-ALT_OBJ=
-ALT_TARGET=
+ALT_OBJ= ${PROG}.alt.o
+ALT_TARGET= ${PROG}.alt
 
 
 #################
@@ -184,6 +184,9 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
+${PROG}.alt: ${PROG}.alt.c
+	${CC} ${CFLAGS} $< -o $@ ${LIBS}
+
 # alternative executable
 #
 alt: data ${ALT_TARGET}