enable display of stats
fixed crash on test case of spine.
Fixed #5561: [2.x]Fix other addChild/removeChild issue in UI
Merge branch 'v2' of https://github.com/cocos2d/cocos2d-x into UI_addChild_fix
Fixed #5561: [2.x]Fix some issue
Merge pull request #7082 from Dhilan007/v2-224

fixed crash on test case of spine.
Merge pull request #7088 from MSOpenTech/fix-v2-stats

Fix v2 stats
Fixed #5561: [2.x]Fix js tests compilation issue
Merge pull request #7089 from pandamicro/UI_addChild_fix

Fixed #5561: [2.x]Fix other addChild/removeChild issue in UI
fixed can't move app to SD card after installed on android.
Merge pull request #7090 from Dhilan007/v2-224

fixed can't move app to SD card after installed on android.
Add ActionTimeline support and binary file loading.
fixed frame's value not right when enter a frame
add timeline test
fix opacity property of the CSB reader
change opacity default value
fixed crash when change test
Merge pull request #7096 from andyque/fixUIBinaryVersion

fix opacity property of the CSB reader
disable projection switch to fix tmx bug
Merge pull request #7098 from dabingnn/v2

V2