fix babel on Windows (cocos#4592)

Fix spine cache error (cocos#4503)

Fix spine cache error (cocos#4503)

fix color multiply bug (cocos#4401)

Merge commit '2.0.10' into v2.1.1-release

# Conflicts:
#	cocos2d/core/renderer/render-engine.js
#	cocos2d/particle/CCParticleSystem.js
#	cocos2d/particle/particle-system-assembler.js

Merge commit '2.0.10' into v2.1.1-release

# Conflicts:
#	cocos2d/core/renderer/render-engine.js
#	cocos2d/particle/CCParticleSystem.js
#	cocos2d/particle/particle-system-assembler.js

转换物理引擎为 built-in (cocos#4324)

Fix memory leaks in the label shadow component (cocos#4267)

fix opacity out of bounds. (cocos#4161)