(cut_path_elements): Added proto.

src/common.h

@@ -567,6 +567,7 @@ char *name_from_list (void);
 void blank_name_list (void);
 char *new_name (const char *, const char *);
 char *safer_name_suffix (char const *, bool);
+char const *cut_path_elements (char const *file_name, size_t num);
 
 bool excluded_name (char const *);