fixed stroke font color with channel color values other than 255
closed #2522: Let Image::initWithImageData() support the packed data.
closed #2522: Fix some coding style.
closed #2522: Fix compile error.
issue #2522: fix some wrong indent.
Merge pull request #3411 from maciekczwa/master

fixed stroke font color with channel color values other than 255
Update AUTHORS [ci skip]
Optimize the ant configuration for plugins
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-x into develop
Merge pull request #3427 from natural-law/develop

Optimize the ant configuration for plugins
Merge pull request #3414 from boyu0/iss2522_unpackccz

closed #2522: Let Image::initWithImageData() support the packed data.
issue #2533: resolve some conflicts