label:fixed incorrect effect of outline.
Merge pull request #5784 from Dhilan007/develop_label

label:fixed incorrect effect of outline.
Merge pull request #5783 from samuele3hu/develop_new_fix

[LuaTest] fix the error that AssetManager test case can’t find correct resource path
make description more readable
update changelog
Merge pull request #5785 from minggo/script-des

[ci skip]some small modification for releasing
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop_new_fix