check for HAVE_ROAPI_H in cmake and autotools, and

update SDL_config_windows.h and SDL_config_winrt.h

include/SDL_config_winrt.h

@@ -195,6 +195,8 @@ typedef unsigned int uintptr_t;
 #define HAVE_TRUNCF 1
 #define HAVE__FSEEKI64 1
 
+#define HAVE_ROAPI_H  1
+
 /* Enable various audio drivers */
 #define SDL_AUDIO_DRIVER_WASAPI 1
 #define SDL_AUDIO_DRIVER_DISK   1