Merge pull request #30 from cocos2d/v3

update cocos2d-x
Merge branch 'v3' of https://github.com/cocoscodeide/cocos2d-x into v3luaruntime
remove comment
add support x86 atomicops_internals_x86_gcc
Merge pull request #57 from chuanweizhang2013/v3luaruntime

add support x86