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/display.test

@@ -0,0 +1,93 @@
+#! /bin/sh
+exec ${MES-bin/mes} --no-auto-compile -L ${0%/*} -L module -C module -e '(tests display)' -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 display)
+  #:use-module (mes mes-0)
+  #:use-module (mes test))
+
+(mes-use-module (mes display))
+(mes-use-module (mes guile))
+(mes-use-module (mes test))
+
+(pass-if "first dummy" #t)
+(pass-if-not "second dummy" #f)
+
+(pass-if-equal "display"
+    "0"
+  (with-output-to-string (lambda () (display 0))))
+
+(pass-if-equal "display"
+    "A"
+  (with-output-to-string (lambda () (display #\A))))
+
+(pass-if-equal "write"
+    "#\\A"
+  (with-output-to-string (lambda () (write #\A))))
+
+(if (or mes? guile-2?)
+    (pass-if-equal "write alarm"
+        "#\\alarm"
+      (with-output-to-string (lambda () (write #\alarm)))))
+
+(pass-if-equal "write string"
+    "\"BOO\\n\""
+  (with-output-to-string (lambda () (write "BOO\n"))))
+
+(pass-if-equal "display string"
+    "BOO\n"
+  (with-output-to-string (lambda () (display "BOO\n"))))
+
+(pass-if-equal "display symbol"
+    "Bah"
+  (with-output-to-string (lambda () (display 'Bah))))
+
+(pass-if-equal "display number"
+    "486"
+  (with-output-to-string (lambda () (display 486))))
+
+(if (or mes? guile-1.8?)
+    (pass-if-equal "display closure"
+        "#<procedure #f (a b c)>"
+      (with-output-to-string (lambda () (display (lambda (a b c) #t))))))
+
+(if (or mes? guile-2?)
+    (pass-if-equal "display builtin thunk"
+        "#<procedure gc ()>"
+      (with-output-to-string (lambda () (display gc)))))
+
+(if (or mes? guile-2?)
+    (pass-if-equal "display builtin procedure"
+        "#<procedure acons (_ _ _)>"
+      (with-output-to-string (lambda () (display acons)))))
+
+(pass-if-equal "s-exp"
+    "(lambda (a b . c) #t)"
+  (with-output-to-string (lambda () (display '(lambda (a b . c) #t)))))
+
+(if mes?
+    (pass-if-equal "vector nest"
+        "#(0 #(...) 2 3)"
+      (with-output-to-string (lambda () (display #(0 #(1) 2 3))))))
+
+(result 'report)