* module/language/elisp/bindings.scm (bindings): Remove `globals'
field. (global?, mark-global!, map-globals): Remove. All callers
changed.
* module/language/elisp/compile-tree-il.scm (generate-ensure-global,
ensuring-globals): Remove. All callers changed.
(global?, ensure-globals!): New procedures.
(bind-lexically?): Use new `global?'.
(compile-lambda, compile-let, compile-let*): Use `ensure-globals!'.