EncodeConvert编码转换工具

用法：
EncodeConvert.jar "args1" "args2" "args3"

参数：
args1 源码的根目录
args2 转换后的文件目录
args3 "g2u"：GBK转UTF-8 "u2g"：UTF-8转GBK

例子：
GBK转UTF-8--->EncodeConvert.jar "E:\GBK\src" "E:\UTF8\src1" "g2u"
UTF-8转GBK--->EncodeConvert.jar "E:\UTF8\src" "E:\GBK\src1" "u2g"