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/build-aux/check-mes.sh

@@ -0,0 +1,62 @@
+#! /bin/sh
+
+# GNU Mes --- Maxwell Equations of Software
+# Copyright © 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/>.
+
+set -e
+. ./config.sh
+set -u
+
+TESTS="
+tests/boot.test
+tests/read.test
+tests/srfi-0.test
+tests/macro.test
+tests/perform.test
+tests/base.test
+tests/quasiquote.test
+tests/let.test
+tests/closure.test
+tests/scm.test
+tests/display.test
+tests/cwv.test
+tests/math.test
+tests/vector.test
+tests/srfi-1.test
+tests/srfi-9.test
+tests/srfi-13.test
+tests/srfi-14.test
+tests/srfi-43.test
+tests/optargs.test
+tests/fluids.test
+tests/catch.test
+tests/getopt-long.test
+tests/guile.test
+tests/syntax.test
+tests/let-syntax.test
+tests/pmatch.test
+tests/posix.test
+tests/match.test
+tests/psyntax.test
+"
+
+XFAIL_TESTS=
+
+test_ext=.test
+log_compiler=${SHELL}
+. ${srcdest}build-aux/test-suite.sh