fix alt rules in Makefiles

For Makefiles that have alt related rules, moved
the related rules under the alt rule section.

In some cases where there is no alt code,
removed alt rules and/or targets.

2020/burton/Makefile

@@ -117,12 +117,12 @@ endif
 ENTRY= burton
 PROG= prog
 #
-OBJ= ${PROG}.o
+OBJ= ${PROG}.o ${PROG}_le.o ${PROG}_be.o
 DATA= correct
-TARGET= ${PROG}
+TARGET= ${PROG} ${PROG}_le ${PROG}_be
 #
-ALT_OBJ= ${PROG}_le.o
-ALT_TARGET= ${PROG}_le
+ALT_OBJ=
+ALT_TARGET=
 
 # magic define parameters for Little Endian machines
 #
@@ -153,9 +153,11 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} -DB=${B} -DI=${I} -DT=${T} -DS=${S} $< -o $@ ${LIBS}
 
-${PROG}_le: ${PROG}
-	${RM} -f $@
-	${CP} -f $< $@
+${PROG}_le: ${PROG}.c
+	${CC} ${CFLAGS} -DB=${B} -DI=${I} -DT=${T} -DS=${S} $< -o $@ ${LIBS}
+
+${PROG}_be: ${PROG}.c
+	${CC} ${CFLAGS} -DB=${_B} -DI=${_I} -DT=${_T} -DS=${_S} $< -o $@ ${LIBS}
 
 test: check_le.sh check_be.sh prog_le prog_be correct
 	./check_le.sh ./prog_le | ${DIFF} -bw - correct
@@ -166,15 +168,12 @@ test: check_le.sh check_be.sh prog_le prog_be correct
 alt: data ${ALT_TARGET}
 	@${TRUE}
 
-${PROG}_be: ${PROG}.c
-	${CC} ${CFLAGS} -DB=${_B} -DI=${_I} -DT=${_T} -DS=${_S} $< -o $@ ${LIBS}
-
 # data files
 #
 data: ${DATA}
 	@${TRUE}
 
-# both all and alt
+
 #
 everything: all alt
 	@${TRUE}