增加handle方法
Merge branch 'AngryPowman' of https://github.com/zpublic/zpublic into AngryPowman
* 采用native socket handle作session id
+ 增加对象池类（object_pool.hpp）
* 修正添加新session到session manager的bug
Merge pull request #11 from zpublic/AngryPowman

AngryPowman