Many improvements to 2005/giljade presentation

The try.sh script lets one experience the entry without having to use
vi(m) .. you know, in case they're afraid of getting stuck :-) (and it
is easier too). The script leaves the file there (rather than piping to
less(1)) so that one can view it in a text editor if they wish.

The file test.sh runs the test suite mode but it filters out the running
of 'make', instead only showing the lines matching '^Line'. When it's
all done it checks if 180 versions (lines) were found (it writes to
stdout and another file with tee(1)). If it does not find 180 it is an
error and this is reported (with exit 1). If it does find 180 all is
good. The make test rule was added and uses this script.

Format and typo check README.md file.

2005/giljade/Makefile

@@ -119,8 +119,8 @@ OBJ= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
-ALT_OBJ= ${PROG}.alt.o
-ALT_TARGET= ${PROG}.alt
+ALT_OBJ=
+ALT_TARGET=
 
 
 #################
@@ -136,18 +136,16 @@ all: data ${TARGET}
 	sandwich supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: this version cannot successfully run the self-test. Use make alt"
-	@echo "for a version which will work. See README.md for why it is this way."
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
 
+test: ${PROG} test.sh
+	./test.sh
+
 # alternative executable
 #
 alt: data ${ALT_TARGET}
 	@${TRUE}
 
-${PROG}.alt: ${PROG}.alt.c
-	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
-
 # data files
 #
 data: ${DATA}
@@ -212,7 +210,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} out
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \