完成一个xml文档解析，依赖于expat库-The completion of an xml document parsing, dependency on the expat library

包含XML解析类，详情见XMLMake.h和XMLParse.h文件，里面包含了说明和Demo代码。-This includes a XML parser, see the XMLMake.h and XMLParse.h for detail,which contains descr iptions and Demo code