progress on self-hosting

Today the self-hosted Irken compiled its first complete program, all the way through substituting into the header template file, and compiling via gcc. A nice feeling.

;; -*- Mode: Irken -*-

(datatype list
  (:nil)
  (:cons 'a (list 'a))
  )

(defmacro list
  (list)         -> (list:nil)
  (list x y ...) -> (list:cons x (list y ...)))

(define (+ a b)
  (%%cexp (int int -> int) "%0+%1" a b))

(define length
  () -> 0
  (_ . tl) -> (+ 1 (length tl)))

(length (list 1 2 3))

I also finally got around to checking in the changes from the last couple of weeks, too much slacking off there.