Implement a new algorithm to eliminate TCO while preventing
premature execution exit by rewriting the evaluation tree and
replacing old nodes with new set of forms, for example the result of
some old form's evaluation, a body of a function or anything in
that nature. Couple the new forms with a possible new execution scope.
Added the support for normal macro (in compare to reader macros and
other types) expansion with out quasiquote support. The quasiquote
will be added as a recursive macro itself.
Add the `let` sform not in the triditional way. In our case
the let scope is available to the bindings. Similar to clojure's let
and let* in triditional sense.
Also add the function `MakeErrorFor` which gets an extra arg, an
`IExpr` and returns an error with the location of that expression.
Sameer Rahmani