inc: update bindings inc/SDL/SDL.bi

- inc/SDL/SDL.bi: add back and #ifdef that was clobbered on merge from fbc-1.10 branch
- see commit 01995b6

inc/SDL/SDL.bi

@@ -1547,6 +1547,11 @@ declare function SDL_WasInit(byval flags as Uint32) as Uint32
 declare sub SDL_Quit()
 #define _SDL_syswm_h
 
+#ifdef __FB_DARWIN__
+	#define Cursor X11Cursor
+	#undef Cursor
+#endif
+
 #ifdef __FB_UNIX__
 	type SDL_SYSWM_TYPE as long
 	enum