fix how alt code it used in 1992/buzzard.2

1992/buzzard.2/Makefile

@@ -168,8 +168,8 @@ OBJ= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
-ALT_OBJ=
-ALT_TARGET=
+ALT_OBJ= ${PROG}.alt.o
+ALT_TARGET= ${PROG}.alt
 
 
 #################
@@ -186,6 +186,9 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
+${PROG}.alt: ${PROG}.alt.c
+	${CC} ${CFLAGS} $< -o $@ ${LIBS}
+
 first: ${PROG}
 	${RM} -f $@
 	${LN} $< $@

1992/buzzard.2/README.md

@@ -32,6 +32,17 @@
 
 	Sorry, this is third!
 
+### Alternate code
+
+An alternate version of this entry, `buzzard.2.alt.c`, is provided.  This alternate code
+does not contain a fix that the author notes below.
+
+To compile this alternate version:
+
+    make alt
+
+Use `buzzard.2.alt` as you would `buzzard.2` above.
+
 ## Judges' comments
 
     Have fun!