
* SDL_windowsopengles.c - enabled SwapInterval.

* SDL_windowsopengl.c - Disabled "_this->gl_data->HAS_WGL_EXT_create_context_es2_profile = SDL_TRUE;" so angle always used for gles20.

* SDL_events.c - used semaphore for WaitEvent instead SDL_Delay( 10 )!

* SDL_timer.c - fixed 'slippage' bug.

* SDL_dynapi_procs.h - commented out references to direct3d.

* SDL_rpiopengles.c - Added call to bcm_host_init();
