Property definitions

egl $ EGLDisplay :: create_window_surface
	fun create_window_surface(config: EGLConfig, native_window: Pointer, attribs: Array[Int]): EGLSurface `{
		EGLSurface surface = eglCreateWindowSurface(self, config, (EGLNativeWindowType)native_window, NULL);
		return surface;
	`}
lib/egl/egl.nit:121,2--124,3