TAG: version:v5.7

Build 1691	change log, v5.7, new version
Build 1693	change log, v5.7
Build 1694	change log, v5.7
Build 1695	change log, v5.7
Build 1698	change log, v5.7
Build 1700	change log, v5.7
Build 1701	change log, v5.7
Build 1703	change log, v5.7
Build 1705	change log, v5.7
Build 1706	change log, v5.7
Build 1707	change log, v5.7
Build 1712	change log, v5.7
Build 1714	change log, v5.7
Build 1715	change log, v5.7
Build 1717	change log, v5.7
Build 1719	change log, v5.7