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/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'; \