install bdjo headers

src/libbluray/bluray.h

@@ -1073,6 +1073,7 @@ void bd_free_mobj(struct mobj_objects *);
 struct bdjo_data;
 struct bdjo_data *bd_read_bdjo(const char *bdjo_file);
 void bd_free_bdjo(struct bdjo_data *);
+#define BLURAY_HAS_BDJO_DATA_H
 
 /* BD-J testing */