Fixed retina/contentScale position errors for iPhone 6+ devices in EditBox.

Problem is that factor was 1.0 or 2.0 until iOS 8 introduced 3.0.
Merge pull request #1 from cocos2d/v3

Update from cocos2d-x
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3
let billboard can rotate in the Z axis
Remove useless copy about luasocket on the android platform
update for cocos reader
ListViewReader completed and listview callback feature.
update for cocos reader
fixed renameFile for wp8 and winrt to pass file and assetmangers tests
invoke closedir after invoke opendir
calculate aabb if not exist
Merge pull request #171 from tangziwen/v3

let billboard can rotate in the Z axis
closedir when succeed
Merge pull request #9394 from MSOpenTech/wp8-fileutils-fix

Fixed CCFileUtils::renameFile() for wp8 and winrt to pass FileUtils and AssetMangers tests
Merge pull request #9390 from liamcindy/UIReader

update for cocos reader
Add interface that create node with flat buffers object for simulator
Merge branch 'v3' into fixEditBox_v3
fix EditBox move animation position is wrong on iPhone6 Plus