ZenGL 0.3.7

Changelog:
- [Win32]fixed range check error in wnd_Update
- [iOS]fixed resolution for iPhone application running on iPad with retina
- [Android]fixed exiting from application
- [Direct3D9]enabled PR2D_SMOOTH
- [Direct3D]fixed crash when using scr_CorrectResolution before zgl_Init
- fixed hanging snd_StopStream in some cases when DirectSound is in use
- fixed pengine2d_DelEmitter

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