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/srfi-13.test

@@ -0,0 +1,144 @@
+#! /bin/sh
+# -*-scheme-*-
+exec ${MES-bin/mes} --no-auto-compile -L ${0%/*} -L module -C module -e '(tests srfi-13)' -s "$0" "$@"
+!#
+
+;;; -*-scheme-*-
+
+;;; GNU Mes --- Maxwell Equations of Software
+;;; Copyright © 2016,2017,2018 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 srfi-13)
+  #:use-module (mes mes-0)
+  #:use-module (mes test))
+
+(mes-use-module (srfi srfi-13))
+(mes-use-module (mes test))
+
+(pass-if "first dummy" #t)
+(pass-if-not "second dummy" #f)
+
+(pass-if "string=?"
+  (string=? "foo" "foo"))
+
+(pass-if "string=?"
+  (let ((empty ""))
+   (string=? "" empty)))
+
+(pass-if-equal "string-join"
+    "foo bar"
+  (string-join '("foo" "bar")))
+
+
+(pass-if-equal "string-join infix"
+               "foo+bar"
+               (string-join '("foo" "bar") "+"))
+
+(pass-if-equal "string-join prefix"
+               ",foo,bar"
+               (string-join '("foo" "bar") "," 'prefix))
+
+(pass-if-equal "string-join suffix"
+               "foo,bar,"
+               (string-join '("foo" "bar") "," 'suffix))
+
+(pass-if-equal "string-split"
+               '("foo")
+               (string-split "foo" #\:))
+
+(pass-if-equal "string-split 2"
+               '("foo" "")
+               (string-split "foo:" #\:))
+
+(pass-if-equal "string-split 3"
+               '("foo" "bar" "baz")
+               (string-split "foo:bar:baz" #\:))
+
+(pass-if-equal "string-index"
+               3
+               (string-index "foo:bar" #\:))
+
+(pass-if-equal "string->number" 42 (string->number "42"))
+(pass-if-equal "string->number INT-MAX" 2147483647 (string->number "2147483647"))
+(pass-if-equal "string->number INT-MIN" -2147483648 (string->number "-2147483648"))
+(pass-if-equal "number->string" "16" (number->string 16))
+(pass-if-equal "number->string INT-MAX" "2147483647" (number->string 2147483647))
+(pass-if-equal "number->string INT-MIN" "-2147483648" (number->string -2147483648))
+(pass-if-equal "number->string" "-4" (number->string -4))
+
+(pass-if-eq "string->list" #\A
+            (car (string->list "A")))
+
+(pass-if-eq "string->list high" #\xff
+            (car (string->list (list->string (list (integer->char 255))))))
+
+(pass-if-eq "string->list high" #xff
+            (char->integer (car (string->list (list->string (list (integer->char 255)))))))
+
+(pass-if-equal "string-fold"
+    "oof"
+  (list->string (string-fold cons '() "foo")))
+
+(pass-if-equal "string-fold-right"
+    "f-o-o-:"
+  (list->string (string-fold-right (lambda (e p) (cons e (cons #\- p))) '(#\:) "foo")))
+
+(pass-if-equal "string-drop" "bar"
+  (string-drop "foobar" 3))
+
+(pass-if-equal "string-drop-right" "foo"
+  (string-drop-right "foobar" 3))
+
+(pass-if-equal "string-contains" 3
+  (string-contains "foobar" "bar"))
+
+(pass-if-not "string-contains not"
+             (string-contains "fuba" "bar"))
+
+(pass-if-equal "string-trim" "foo  "
+             (string-trim "  foo  "))
+
+(pass-if-equal "string-trim-right" "  foo"
+             (string-trim-right "  foo  "))
+
+(pass-if-equal "string-trim-both" "foo"
+             (string-trim-both "  foo  "))
+
+(pass-if-equal "string-map" "fuubar"
+             (string-map (lambda (c) (if (eq? c #\o) #\u c)) "foobar"))
+
+(pass-if-equal "string-replace" "fubar"
+             (string-replace "foobar" "u" 1 3))
+
+(pass-if-equal "reverse" '(3 2 1)
+               (reverse '(1 2 3)))
+
+(pass-if-equal "reverse fresh" '(1 2 3)
+               (let ((list '(1 2 3)))
+                 (reverse list)
+                 list))
+
+(pass-if-equal "reverse!" '(1)
+               (let ((list '(1 2 3)))
+                 (reverse! list)
+                 list))
+
+(pass-if-equal "reverse! ()" '()
+  (reverse! '()))
+
+(result 'report (if (and (or #t (equal? %compiler "gnuc")) (equal? %arch "x86")) 1 0))