Bug fix: Boot catalog could get a wrong name if cat_path= is explicitely given but not containing a slash character

xorriso/xorrisoburn.h

@@ -172,6 +172,8 @@ int Xorriso_normalize_img_path(struct XorrisO *xorriso, char *wd,
 
 /* @param boss_iter Opaque handle to be forwarded to actions in ISO image
                     Set to NULL if calling this function from outside ISO world
+   @param flag      bit0= silently ignore attempt of renaming to same path
+                          and return 2
 */
 int Xorriso_rename(struct XorrisO *xorriso, void *boss_iter,
                    char *origin, char *dest, int flag);