fix errors & add functions

DirCopy, CreateDir, FileDelete, FileExists, DirMove, FileMove, DirRemove, FileCopy, DriveGetDrive, FileGetVersion, FileChangeDir, DriveGetFileSystem, DriveGetLabel, DriveGetSerial, DriveGetType, DriveMapAdd, DriveMapDel, DriveMapGet, DriveSetLabel, DriveSpaceFree, DriveSpaceTotal, DriveStatus