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unforseen sideeffect

This is a rare case of a good unforseen sideeffect.  The current
optomization of return &*foo  
translates into a compile error when smalltalk code is
this is because the translator special cases NULL.

This is good, once you understand what the problem is, because it forces 
us to convert all ^nil to ^NULL
unfornately it can't actually work with real code because
any pointer that can actually be NULL i.e. == 0 will fail at runtime
on &*,  nicht war?   Too bad.