added configurable cursor path

added some GNUstep support code

src/window.h

@@ -248,7 +248,8 @@ typedef struct WWindow {
 #endif
 
 	/* info flags */
-	unsigned int is_gnustep:1;
+	unsigned int is_gnustep:1;     /* 1 if the window belongs to a GNUstep
+					app */
 	
 	unsigned int buttons_dont_fit:1;
 	unsigned int rebuild_texture:1;/* the window was resized and