more translator updates

[Eric Dean Tribble <tribble>]

OF and AS types are finished.  I also fixed the worst robustness bug:
it now interacts with the user on errors (rather than crashing).  This
means all the normal spelling correction and such.  Actually, I'm
using Hugh's reproduction of the Apple Smalltalk spelling corrector
which is MUCH better.  

It's always a shock starting to work on the Ent again.  It takes up
three categories in my browser as opposed to 30 or so for the frontend
stuff.  I get lost....

dean