add Makefile
jt.config compatible
rebuild
add virtutal file system
virtual filesystem build done
Merge branch 'unit-test' into fs

Conflicts:
	lib/kernel.js
virtual file system test
rebuild server
调整目录结构
rebuild kernel
rebuild server
rebuild server
rebuild server
virtual file system add search
rebuild
删除无用文件
modifi builder api and add builder unit test
rebuild extension
修改扩展
支持处理多重处理器