[CM] Let with list destructuring

[Christos Vagias]

Hi all,

Wanted to share with you a macro I wrote about let (and let*) with
list destructuring. Something similar to the destructuring-bind as seen
in stuff.scm
I missed this functionality from clojure.

Example usage:

;; letd: mnemonic: let-destructure
 (letd ((a 1)
        (b 2)
        ((c d) (list (+ 1 2) 4)))
       (list a b c d ))
 ;; => (1 2 3 4)

(letd* ((a 1)
       (b 2)
       ((c d) (list (+ 1 2) 4))
       (e (+ 1 d)))
(list a b c d e))
;; =>  ;; (1 2 3 4 5)

Note: clojure also has destructuring for maps etc. Didn't have this need
yet,
but guess the macro could be modified to accommodate destructuring
hashmaps, inlets etc.
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