Data#40_yuanzhe:modify db structure
Data#40_yuanzhe:modify db structure,each record add commit_id field
Data#40_yuanzhe:modify dao for new structure
Data#40_yuanzhe:generate version id
Merge pull request #108 from v11985/data#40_wangfeng

Fix bug: Lost status when rename->yuanzhe
Data#40_yuanzhe:modify dao for updateactions
Data#40_yuanzhe:modify findall method,find update item both in history and operations
Data#40_yuanzhe:base on dao change,modify upper api
Merge pull request #109 from huyuanzhe/Data#40_yuanzhe

Data#40 yuanzhe->xiquan
Fix bug : Crash when there are little data
Merge branch 'Data' of ssh://github.com/IbpTeam/demo-rio into data#40_wangfeng