add exfile class

Signed-off-by: donasoo <habsburgh@gmail.com>
new 平
first done

Change-Id: I8ac56cc838453170817761ed36eb10f3d516b133
Signed-off-by: donasoo <donasoo@msn.com>
first done
Merge branch 'master' of https://github.com/donasoo/gjspace.git
test ok

Signed-off-by: donasoo <donasoo@msn.com>
ok

Signed-off-by: donasoo <donasoo@msn.com>
ok


Signed-off-by: donasoo <donasoo@msn.com>
strategy 0.1 duck

Signed-off-by: donasoo <donasoo@msn.com>
test

Signed-off-by: donasoo <donasoo@msn.com>
can work

Signed-off-by: donasoo <habsburgh@gmail.com>