Auto convert source code to UTF-8 compatiable

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For those code files which contains gb2312 or gbk format, we can use following scripts for automatically convert them to UTF-8 conpatiable format files.

#!/bin/sh
export LANG="zh_CN.utf8"
export LC_ALL="zh_CN.utf8"
#for file in `find . -name "*.h"`
for file in `find . -name "*.c"`
do
	echo $file
	enca -L zh_CN -x UTF-8 $file
done