[Testing] Memoize 'path_to_parrot()' as a preparation for breaking up '_generate_functions'. 
[Testing]
Memoize 'path_to_parrot()' as a preparation
for breaking up '_generate_functions'. 


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@19852 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot