cvs-root yaffs yaffs2

包涵yaffs和yaffs2的代码，文件系统搭建的代码，是在linux下搭建NAND-Flash文件系统必要代码，是开发文件系统、文件系统移植、开发驱动程序的基础-Bear and yaffs2 yaffs code, the code to build the file system is set up in linux file system need to NAND-Flash code, is the development of file system, file system mig