Message2483

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r2957/2958 should finish addressing this on the trunk.

I made jython more similar to CPython. get will not delegate
to an overriden __getitem__ by default. We are too incosistent 
in doing that overall to make this worth the difference
vs cpython.

I had to fix other stack overflows/infinite recursion related
on how str/unicode and tuples didn't follow the lead of
lists in using PySequence without getting into trouble.