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 _EXDISPID_H
#define _EXDISPID_H
#if __GNUC__ >=3
#pragma GCC system_header
#endif
#define DISPID_BEFORENAVIGATE2 250
#define DISPID_NEWWINDOW2 251
#define DISPID_PROGRESSCHANGE 108
#define DISPID_DOCUMENTCOMPLETE 259
#define DISPID_STATUSTEXTCHANGE 102
#define DISPID_TITLECHANGE 113
#endif