Merge pull request #35 from pandamicro/AssetManager

Refactored AssetsManager
Merge pull request #36 from pandamicro/AssetManager

Feature #4977: Refactor AssetsManager API
Merge pull request #37 from pandamicro/AssetManager

Feature #4977: Add new classes to android mk
Merge branch 'v3' of git://github.com/cocos2d/cocos2d-x into lua-vm
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
Feature #4977: Fix an issue of duplicated release manifest object
Merge branch 'AssetManager' into v3_assets_manager
Make constructors public
Merge branch 'v3_assets_manager' of git://github.com/cocos2d-html5/cocos2d-x into v3_assets_manager
Merge pull request #32 from pandamicro/v3_assets_manager

Fix bugs and improve AssetsManager and its test case