Add alt code to 1996/eldby - moves too fast now

For those who have any sensitivity to things zooming by (like me) or who
also just thinks it goes by too fast with modern systems to truly enjoy
(like me) there is now the alt version. This should help make it more
like in the past but without tampering with the original code.

See the README.md for how to reconfigure the default sleep time.

Format fixes in README.md as well.

1996/eldby/Makefile

@@ -58,7 +58,7 @@ ARCH=
 
 # Defines that are needed to compile
 #
-CDEFINE=
+CDEFINE= -DZ=35000
 
 # Include files that are needed to compile
 #
@@ -114,8 +114,8 @@ OBJ= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
-ALT_OBJ=
-ALT_TARGET=
+ALT_OBJ= ${PROG}.alt.o
+ALT_TARGET= ${PROG}.alt
 
 
 #################