Merge branch 'v3_updateSpine' of https://github.com/dabingnn/cocos2d-x into v3_new_spine

Conflicts:
	build/cocos2d_libs.xcodeproj/project.pbxproj
Update lua bindings for Spine and related test case
Add SpineConstants.lua
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_new_spine

Conflicts:
	build/cocos2d_libs.xcodeproj/project.pbxproj
Remove useless binding code for SkeletonAnimation
Fix win32 compile error
Merge pull request #8760 from samuele3hu/v3_new_spine

Update lua bindings for Spine and related test case