add TestCase for reparentChildren bug
Merge branch 'v3' into reparentChildren
set parent transform dirty when addChild
Undo project file changes
Merge branch 'reparentChildren' of https://github.com/darkdukey/cocos2d-x into v3_nodefix
update project
fix compiling fail on Linux.
Merge pull request #6714 from Dhilan007/v3_nodefix

Fix a bug that if a node changes parent, parent's matrix will not update to reflect this change.