Sprite3DTest.lua:
Add Sprite3DWithSkinTest
Add AttachmentTest
Add Sprite3DReskinTest
Add Sprite3DMirrorTest
Add Sprite3DHitTest
Finished Sprite3DHitTest
Sprite3DHitTest use BoundingBox
Remove string err no used
modify return type of getDirection and getDirectionInWorld
Merge pull request #135 from lvlonggame/v3

Remove string err that is no used
Merge branch 'v3_new' into v3

Conflicts:
	tests/lua-tests/src/Sprite3DTest/Sprite3DTest.lua
Fixed getCosOuterAngle errors
Merge branch 'newcode' into v3
Merge branch 'v3' of https://github.com/super626/cocos2d-x into v3
Merge pull request #136 from songchengjiang/new_v3

Fixed CosOuterAngle error
Merge branch 'newcode' into v3
Merge branch 'v3' of https://github.com/super626/cocos2d-x into v3
Merge pull request #8586 from super626/v3

Fix warning of Bundle3D and modify light