Move GLES20 source into standard locations
Move Khronos headers into their respective components, to be exported by each.
Remove hostthreadadapter as nothing outside of the vghwapiwrapper, which now contains the code, needs it
#ifndef _CONTROL_H
#define _CONTROL_H
#if __GNUC__ >= 3
#pragma GCC system_header
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*--- DirectShow Reference - DirectShow Data Types */
typedef LONG_PTR OAEVENT;
typedef LONG_PTR OAHWND;
#ifdef __cplusplus
}
#endif
#endif