package-data.lisp-expr (i.e. those symbols not bound,
fbound, defined as types, or whatever), and used them
to remove dead symbols
-* made system handle stack overflow safely unless SAFETY is dominated
- by SPEED or SPACE
* Either get rid of or at least rework the fdefinition/encapsulation
system so that (SYMBOL-FUNCTION 'FOO) is identically equal to
(FDEFINITION 'FOO).