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 _PBT_H
#define _PBT_H
#if __GNUC__ >= 3
#pragma GCC system_header
#endif
/* Also in winuser.h */
#define PBT_APMQUERYSUSPEND 0
#define PBT_APMQUERYSTANDBY 1
#define PBT_APMQUERYSUSPENDFAILED 2
#define PBT_APMQUERYSTANDBYFAILED 3
#define PBT_APMSUSPEND 4
#define PBT_APMSTANDBY 5
#define PBT_APMRESUMECRITICAL 6
#define PBT_APMRESUMESUSPEND 7
#define PBT_APMRESUMESTANDBY 8
#define PBT_APMBATTERYLOW 9
#define PBT_APMPOWERSTATUSCHANGE 10
#define PBT_APMOEMEVENT 11
#define PBT_APMRESUMEAUTOMATIC 18
#define PBTF_APMRESUMEFROMFAILURE 1
#endif