issue #5032:A potential crash bug of Lua binding
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_lua_fix
add some comment for dependences module in Android.mk to make it simple to use other module
:= -> +=
Merge pull request #6598 from minggo/android-makefile

add some comment for dependences module in Android.mk to make it simple ...
Merge pull request #6595 from samuele3hu/v3_lua_fix

close #5032: A potential crash bug of Lua binding for sp.SkeletonAnimation.setAnimation
Update the reference of submodule plugin-x.