Merge pull request #5 from pandamicro/develop

Fixed #4566: Constructor added for LayerGradient and sync -x
Merge branch 'LayerGradientCtor' into develop
Merge branch 'LayerGradientCtor' into develop
Revert "Reverse CONSTRUCTOR_ACCESS"

This reverts commit 2e1e8d08463137736ea46fe3a47be22d7b25e16b.
Merge pull request #6 from pandamicro/develop

Fixed #4566: Fix bugs with LayerGradient constructor fix
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Issue #3897: Add missed constructors
Reverse CONSTRUCTOR_ACCESS to protected
Issue #3897: Move OrbitCamera constructor into cpp
Merge pull request #6048 from pandamicro/ConstructorAccess2

Issue #3897: Add missed constructors