Make constructors public
Merge branch 'v3' of git://github.com/cocos2d/cocos2d-x into AssetManager
Feature #4977: Improve AssetsManager test case
Reverse (Make constructors public)
Feature #4977: Add connection timeout, remove usage of thread for batchDownload
Merge branch 'lua-vm' of https://github.com/dumganhar/cocos2d-x into AssetManager
Merge pull request #39 from pandamicro/AssetManager

Improve AssetsManager and its test case