- after discussions with the original project folks working with zope security

- after discussions with the original project folks working with zope security
proxies, they aren't overriding getattr() or setattr() at all.  so all the
hardcoded getattr()/setattr() is removed from collections.py.   Lots of these
getattr/setattr were against the attributeimpl and decorated functions
and don't seem like they'd ever be needed; for a user that needs special access
to a collection, we can evaulate that use case and add a single point of
"unwrapping", and probably add a hook for it via
InstrumentationManager so that the collection implementation isn't complicated
by it.