rm: In some cases, remove_dir is doing a better job than remove_dir_all

[sylvestre]

use it when remove_dir_all failed

GNU compatibility (rm/empty-inacc.sh)

[sylvestre]

it doesn't fully fix the test
Next is

fail=0
mkdir -m a-r -p a/unreadable
rm -rf a
echo $fail
test -d a && fail=1
echo $fail

which should pass

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/rm/unreadable is no longer failing!

[sylvestre]

GNU testsuite comparison:

Congrats! The gnu test tests/rm/unreadable is no longer failing!

Well this is an unexpected good result :)

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/rm/unreadable is no longer failing!