Merge pull request #1948 from wuzhiming/ccpool

fixed the setter bug
Issue #5600: Fixed a bug about UITextField
Release #5636: Update engine version
Merge pull request #1949 from pandamicro/develop

Release #5636: Update engine version
Release #5636: Update build.xml for closure compiler
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into develop
Merge pull request #1950 from pandamicro/develop

Release #5636: Update build.xml for closure compiler
Release #5636: Update authors
Merge pull request #1951 from pandamicro/develop

Release #5636: Update authors
Issue #5600: UITextField bug about password and event
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into develop-cocostudio
Issue #5600: Fixed a bug that UILayout in the WebGL
Merge pull request #1939 from VisualSJ/develop-cocostudio

Issue #5600: update cocostudio
Merge branch 'develop' of git://github.com/cocos2d/cocos2d-html5 into develop
Issue #5600: Fixed a bug that UILayout
Release #5636: Move plugin-x to external
Issue #5600: TODO NEW RENDERER
Issue #5600: Restore code
Release #5636: Separate pluginx and plugin-facebook
Issue #5600: Fixed a bug about UICheckBox