add arch conf saver

conf/arch/README.md

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+# Arch Linux
+
+some copies of conf files and utils

conf/arch/updatefiles.sh

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+#!/bin/sh
+# copy some important files into current directory.
+
+files="
+/etc/rc.conf
+/var/log/pacman.log
+/etc/pacman.d/gnupg/gpg.conf
+/etc/vconsole.conf
+"
+
+convpass(){
+    echo $1 | sed -e 's / ! g'
+}
+
+for i in $files
+do
+    cp -fvu $i ./$(basename $i)
+done
+
+mapdir=/usr/share/kbd/keymaps/i386/qwerty
+
+test ${mapdir}/myjp106.map.gz -nt ./myjp106.map &&
+zcat ${mapdir}/myjp106.map.gz >./myjp106.map &&
+{
+    test -f ./jp106.map || 
+    zcat ${mapdir}/jp106.map.gz >./jp106.map
+
+    diff -u ./jp106.map ./myjp106.map >mymap.diff
+    echo "Make myjp106 patch."
+}
+
+pacman -Qqe | grep -vx "$(pacman -Qqm)" > ./pkg.lst &&
+echo "Make pkg.lst."