Fix 2005/persano make clobber, .gitignore, try.sh

The make clobber fix is important for updating the manifest. The
.gitignore left a .gif file out but now it just ignores '*.gif'. The
script was updated with some newlines to separate commands.

2005/persano/.gitignore

@@ -1,11 +1,10 @@
 #
 # sort with: ../../bin/sgi
 *.dSYM
-foo.gif
+*.gif
 indent
 indent.c
 indent.o
 persano
 persano.orig
 prog.orig
-seal.gif

2005/persano/Makefile

@@ -207,7 +207,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
-	${RM} -rf *.dSYM
+	${RM} -rf *.dSYM *.gif
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \

2005/persano/try.sh

@@ -24,6 +24,7 @@ if [[ -f knot3-16.gif ]]; then
     echo "Now open the file knot3-16.gif in a GIF viewer capable of viewing animated" 1>&2
     echo "GIFs. See the README.md for details on a tool to manipulate it, if you wish." 1>&2
 fi
+echo 1>&2
 
 read -r -n 1 -p "Press any key to run: ./persano 3 2 1 > foo.gif: "
 echo 1>&2
@@ -33,6 +34,7 @@ if [[ -f foo.gif ]]; then
     echo "Now open the file foo.gif in a GIF viewer capable of viewing animated" 1>&2
     echo "GIFs. See the README.md for details on a tool to manipulate it, if you wish." 1>&2
 fi
+echo 1>&2
 
 read -r -n 1 -p "Press any key to run: ./persano 5 2 > seal.gif: "
 echo 1>&2
@@ -43,3 +45,4 @@ if [[ -f seal.gif ]]; then
     echo "Now open seal.gif (Solomon's Seal knot) in a GIF viewer capable of viewing" 1>&2
     echo "animated GIFs. See the README.md for details on a tool to manipulate it, if you wish." 1>&2
 fi
+echo 1>&2