When we pull up names (which happens before abbreviation checking), we create a lot of nonces with greater scope than the original variables. When we go to abbreviation check this, we therefore set off lots of false alarms about originally safe code. So to fix this, the easiest method seems to be turning off checking on all the names introduced by the compiler.
This makes cgtest82 work, although I'm not very happy with it as a fix. I'd
rather have a way of ensuring the state's definitions are kept up to date when
we change something in the AST.
This fixes the AST, parser and typechecker, and adds a pass to
transform Result back into Abbrev, but doesn't transform Initial yet.
(It actually works for trivial stuff anyway, but it won't do the right
thing for complex types or PROC parameters.)
It appears (to me) to make sense to support INITIAL/RESULT reshaping
and retyping too, so this does.
Refs #42.
