[tools]: Crow updates ~ add function to vivify aggregate values during lookup   this allows 'infix://=' to use assign semantics ~ removed debugging code
[tools]: Crow updates
~ add function to vivify aggregate values during lookup
  this allows 'infix://=' to use assign semantics
~ removed debugging code

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@17286 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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