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/after.kaem.run

@@ -16,10 +16,32 @@
 # You should have received a copy of the GNU General Public License
 # along with live-bootstrap.  If not, see <http://www.gnu.org/licenses/>.
 
-PATH=/bin
+set -ex
 
-# Part 2: blynn-compiler
+PATH=/after/bin:/bin
+
+# Part 2: cp and chown (mescc-tools-extra)
+cd mescc-tools-extra
+kaem --file go.kaem
+cd ..
+
+# Part 3: Remove remaining dependencies on / (root of /after)
+/after/bin/cp ../bin/hex2 bin/hex2
+/after/bin/cp ../bin/M1 bin/M1
+/after/bin/cp ../bin/M2-Planet bin/M2-Planet
+/after/bin/cp ../bin/blood-elf bin/blood-elf
+/after/bin/cp ../bin/get_machine bin/get_machine
+/after/bin/cp ../bin/mes-m2 bin/mes-m2
+/after/bin/cp ../bin/kaem bin/kaem
+/after/bin/cp ../catm bin/catm
+/after/bin/chmod 755 bin/hex2 bin/M1 bin/M2-Planet bin/blood-elf \
+    bin/get_machine bin/mes-m2 bin/kaem bin/catm
+
+# Part 4: blynn-compiler
 
 cd blynn-compiler
 kaem --file go.kaem
 cd ..
+
+# Part 5: mes
+kaem --file mes.kaem