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