Add mes and mescc-tools-extra

mescc-tools-extra contains two important tools:
- cp
- chmod

mes first builds itself from a mes 0.21 seed as used by guix, and then
builds a mes 0.22 and then mes 0.22 using that created mes 0.22.

It does /not/ use bootstrap.sh as we don't have a proper shell at this
point, it has been manually adapted for kaem.

sysa/mes-0.22/tests/closure.test

@@ -0,0 +1,120 @@
+#! /bin/sh
+# -*-scheme-*-
+exec ${MES-bin/mes} --no-auto-compile -L ${0%/*} -L module -C module -e '(tests closure)' -s "$0" "$@"
+!#
+
+;;; -*-scheme-*-
+
+;;; GNU Mes --- Maxwell Equations of Software
+;;; Copyright © 2016,2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
+;;;
+;;; This file is part of GNU Mes.
+;;;
+;;; GNU Mes is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Mes is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (tests closure)
+  #:use-module (mes mes-0)
+  #:use-module (mes test))
+
+(mes-use-module (mes test))
+
+(pass-if "first dummy" #t)
+(pass-if-not "second dummy" #f)
+
+(define b 0)
+(define x (lambda () b))
+(define (x) b)
+(pass-if-equal "closure" 0 (x))
+(display "===>") (display (x)) (newline)
+(define (c b)
+  (x))
+(pass-if "closure 2" (seq? (c 1) 0))
+
+(define (x)
+  (define b 1)
+  (define (y) b)
+  (set! b 0)
+  (list b
+        (let ((b 2))
+          (y))))
+
+(pass-if "closure 3" (sequal? (x) '(0 0)))
+
+(pass-if "closure 4 "
+  (seq? (let ()
+          (let ((count (let ((counter 0))
+                         (lambda ()
+                           counter))))
+            (count)))
+        0))
+
+(pass-if "closure 5 "
+         (seq?
+          (let ()
+            (define name? 2)
+            (define (foo)
+              (define name? 0)
+              (lambda () name?))
+            ((foo)))
+          0))
+
+(pass-if "closure 6 "
+         (seq?
+          (let ()
+            (define foo
+              (lambda ()
+                (define name? symbol?)
+                (lambda ()
+                  (name? 'boo))))
+            ((foo)))
+               #t))
+
+(define-macro (foo? q+q)
+  #t)
+(foo? 'cons)
+(pass-if-equal "closure 7" #f (defined? 'q+q))
+
+(let ((x 0))
+  (pass-if-equal "closure 8" #f (not (defined? 'x))))
+
+((lambda ()
+   (define sc-expand #f)
+   ((lambda (g38)
+      (set! sc-expand
+            ((lambda ()
+               (lambda ()
+                 (list g38))))))
+    "noexpand")
+   (pass-if "closure 9" (sc-expand))))
+
+(pass-if "closure is procedure"
+             (procedure? (lambda () #t)))
+
+(pass-if-not "closure is not a pair"
+             (pair? (lambda () #t)))
+
+(define shared
+  (let ((x 0))
+    (lambda () (set! x (+ 1 x)) x)))
+(define-macro (share)
+  (list 'begin
+        (list 'shared)))
+
+(pass-if-equal "shared variable macro access"
+    2
+  (begin
+    (share)
+    (shared)))
+
+(result 'report)