, dir2.
 common_dirs: subdirectories in both dir1 and dir2.
 common_files: files in both dir1 and dir2.
 common_funny: names in both dir1 and dir2 where the type differs between
    dir1 and dir2, or the name is not stat-able.
 same_files: list of identical files.
 diff_files: list of filenames which differ.
 funny_files: list of files which could not be compared.
 subdirs: a dictionary of dircmp instances (or MyDirCmp instances if this
   object is of type MyDirCmp, a subclass of dircmp), keyed by names
   in common_dirs.
 NTŠ