Fix make clobber in 2014/endoh2

Since the try script creates the files hello.c, hello, ioccc.c and ioccc
the clobber rule needs to remove those files.

The script now uses less(1) for longer output (it's possible there are
still small enough displays where it would be useful).

2014/endoh2/Makefile

@@ -201,7 +201,7 @@ clean:
 	fi
 
 clobber: clean
-	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f ${TARGET} ${ALT_TARGET} ioccc ioccc.c hello hello.c
 	${RM} -rf *.dSYM
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \

2014/endoh2/try.sh

@@ -15,14 +15,14 @@ make CC="$CC" all >/dev/null || exit 1
 # clear screen after compilation so that only the entry is shown
 clear
 
-read -r -n 1 -p "Press any key to run: echo Hello | ./prog: "
+read -r -n 1 -p "Press any key to run: echo Hello | ./prog (space = next page, q = quit): "
 echo 1>&2
-echo Hello | ./prog
+echo Hello | ./prog | less -rEXFK
 echo 1>&2
 
-read -r -n 1 -p "Press any key to run: echo IOCCC | ./prog: "
+read -r -n 1 -p "Press any key to run: echo IOCCC | ./prog (space = next page, q = quit): "
 echo 1>&2
-echo IOCCC | ./prog
+echo IOCCC | ./prog | less -rEXFK
 echo 1>&2
 
 read -r -n 1 -p "Press any key to run: echo Hello | ./prog > hello.c: "
@@ -30,6 +30,13 @@ echo 1>&2
 echo Hello | ./prog > hello.c
 echo 1>&2
 
+# we don't use tee(1) above as it makes the message longer and it's not strictly
+# necessary
+read -r -n 1 -p "Press any key to show hello.c (space = next page, q = quit): "
+echo 1>&2
+less -rEXFK hello.c
+echo 1>&2
+
 read -r -n 1 -p "Press any key to compile hello.c: "
 echo 1>&2
 make hello >/dev/null