Merged revision(s) 127-133 from it/trunk:
去掉void*的隐式转换

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Merge pull request #25 from actboy168/bug-fix

去掉void*的隐式转换
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add sprite.ps to set position and scale to sprite

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No need screencoord for sprite.draw now

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change sprite.test api

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add sprite.sr for set scale and rotation

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Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d

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