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/build-guile.sh

@@ -0,0 +1,65 @@
+#! /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
+
+. ${srcdest}build-aux/trace.sh
+GUILE_AUTO_COMPILE=0
+
+SCM_FILES="
+module/mes/getopt-long.scm
+module/mes/guile.scm
+module/mes/misc.scm
+module/mes/test.scm
+module/mescc/M1.scm
+module/mescc/as.scm
+module/mescc/bytevectors.scm
+module/mescc/compile.scm
+module/mescc/i386/as.scm
+module/mescc/i386/info.scm
+module/mescc/x86_64/as.scm
+module/mescc/x86_64/info.scm
+module/mescc/info.scm
+module/mescc.scm
+module/mescc/mescc.scm
+module/mescc/preprocess.scm
+"
+
+SCRIPTS="
+build-aux/mes-snarf.scm
+"
+
+export host=$($GUILE -c "(display %host-type)")
+
+abs=$srcdest
+if [ "$GUILE_EFFECTIVE_VERSION" = "2.0" ]; then
+    srcdest=$abs_top_srcdir/
+fi
+
+for i in $SCM_FILES $SCRIPTS; do
+    b=$(basename $i)
+    go=${i%%.scm}.go
+    f=${srcdest}$i
+    if test $f -nt $go; then
+        trace "GUILEC     $f" $GUILD compile -L ${srcdest}module -L ${srcdest}build-aux -L ${srcdest}scripts -o $go $f
+    fi
+done