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/mescc-tools-extra/go.kaem

@@ -0,0 +1,81 @@
+#!/bin/sh
+set -ex
+
+# cp command
+M2-Planet \
+    -f /M2-Planet/test/common_x86/functions/file.c \
+    -f /M2-Planet/test/common_x86/functions/exit.c \
+    -f /M2-Planet/test/common_x86/functions/malloc.c \
+    -f /M2-Planet/test/common_x86/functions/getcwd.c \
+    -f /M2-Planet/test/common_x86/functions/chdir.c \
+    -f functions/string.c \
+    -f functions/file_print.c \
+    -f functions/match.c \
+    -f functions/require.c \
+    -f /M2-Planet/functions/calloc.c \
+    -f functions/in_set.c \
+    -f functions/numerate_number.c \
+    -f cp.c \
+    --architecture x86 \
+    --debug \
+    -o cp.M1
+
+blood-elf -f cp.M1 -o cp-footer.M1
+
+M1 \
+    -f /M2-Planet/test/common_x86/x86_defs.M1 \
+    -f /M2-Planet/test/common_x86/libc-core.M1 \
+    -f cp.M1 \
+    -f cp-footer.M1 \
+    --LittleEndian \
+    --architecture x86 \
+    -o hold
+
+hex2 \
+    -f /M2-Planet/test/common_x86/ELF-i386-debug.hex2 \
+    -f hold \
+    --LittleEndian \
+    --architecture x86 \
+    --BaseAddress 0x8048000 \
+    -o /after/bin/cp \
+    --exec_enable
+
+# chmod command
+M2-Planet \
+    -f /M2-Planet/test/common_x86/functions/file.c \
+    -f /M2-Planet/test/common_x86/functions/exit.c \
+    -f /M2-Planet/test/common_x86/functions/malloc.c \
+    -f /M2-Planet/test/common_x86/functions/getcwd.c \
+    -f /M2-Planet/test/common_x86/functions/chdir.c \
+    -f functions/string.c \
+    -f functions/file_print.c \
+    -f functions/match.c \
+    -f functions/require.c \
+    -f functions/in_set.c \
+    -f functions/numerate_number.c \
+    -f /M2-Planet/functions/calloc.c \
+    -f /M2-Planet/test/common_x86/functions/stat.c \
+    -f chmod.c \
+    --architecture x86 \
+    --debug \
+    -o chmod.M1
+
+blood-elf -f chmod.M1 -o chmod-footer.M1
+
+M1 \
+    -f /M2-Planet/test/common_x86/x86_defs.M1 \
+    -f /M2-Planet/test/common_x86/libc-core.M1 \
+    -f chmod.M1 \
+    -f chmod-footer.M1 \
+    --LittleEndian \
+    --architecture x86 \
+    -o hold
+
+hex2 \
+    -f /M2-Planet/test/common_x86/ELF-i386-debug.hex2 \
+    -f hold \
+    --LittleEndian \
+    --architecture x86 \
+    --BaseAddress 0x8048000 \
+    -o /after/bin/chmod \
+    --exec_enable