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fixed #1747: Crash occurs when passing null to cc.AnimationFrame.initWithSpriteFrame.
Merge pull request #2039 from dumganhar/iss1747-jsb-animation

fixed #1747: Crash occurs when passing null to cc.AnimationFrame.initWithSpriteFrame.
Updates libcurl with ssl support for win32.
Merge pull request #2041 from dumganhar/master

Updates libcurl with ssl support for win32.
issue #1489:add some log
Merge https://github.com/cocos2d/cocos2d-x into iss1489-AssetsManager