hadoop-core-1.2.0

修改过的注释掉checkReturnValue方法后hadoop-core-1.2.0的hadoop-core-1.2.0.jar包，另有FileUtil.java编译后的class文件，可用于替换掉hadoop-core-1.2.0.jar中对应的编译类解决hadoop运行在windows下的错误Exceptioninthread"main"java.io.IOException:Failedtosetpermissionsofpath:\tmp\hadoop-Administrator\mapred\staging\Administrator606301699\.stagingto0700