Re: lexical mumblings

[Richard Stallman]

     - having `llet' and `dlet' as "main" forms and `let' as an alias to one
       of them (`dlet' by default); then (use-lexical-binding) would just do
       (defalias 'let 'llet)

     - adding CL `special' declarations, and making `let' a macro,
       like I have in CLOCC/CLLIB/elisp.lisp:

Neither of these will work correctly--they have the wrong scoping ;-).
The correct behavior is that code which was read in as lexical is
always lexical, and code that was read in as dynamic is always
dynamic.