With --ignore-path-in-watch-later-config,
--write-filename-in-watch-later-config still writes the absolute path of
files in the comment, even though the hash is calculated from the
basename. Make it write the basename to avoid confusion.
Also stop writing redirect entries for parent directories with
--ignore-path-in-watch-later-config, both because it's redundant, and
because with this patch it would write the basename of directories in
the comment, which would be wrong because their hashes are calculated
from the absolute paths.
8cd678bfe4