fix box2d dynamic tree draws
Optimize the performance of BlurSpriteTest in Shader Sprite.
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Merge pull request #6061 from natural-law/develop

Optimize the performance of BlurSpriteTest in Shader Sprite.
TextFieldTTF:fixed display incorrect color.
fix some box2d test position
add background.wav to wp8 to play
change type of Label::_shadowNode
Merge pull request #6062 from Dhilan007/develop_label

TextFieldTTF:fixed display incorrect color.
ccvector_to_luaval would lead to memory leak because call  the `retain`
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop_socket
add box2dbed test keyboard event.
delete Time of Impact test which can not shown
Merge pull request #6064 from samuele3hu/develop_socket

ccvector_to_luaval would lead to memory leak because call the `retain`
Merge pull request #6065 from boyu0/3.0rc1_test

fix box2dbed dynamic tree test draw.
Merge pull request #6063 from koowolf/add_bg_wav

add background.wav to wp8 to play