export lua symbol
remove api sprite.retrieve
去掉void*的隐式转换
Merge pull request #25 from actboy168/bug-fix

去掉void*的隐式转换
add sprite.ps to set position and scale to sprite
No need screencoord for sprite.draw now
change sprite.test api
add sprite.sr for set scale and rotation
add iOS planthom gesture interface
Merge branch 'master' of ssh://oa.ejoy.com/ejoy2d
remove dependence of gcc typeof
avoid div 0