Bug 11501 – dirEntries fails with "Failed to stat file" when encountering broken symlinks

on posix (at least OSX), create a broken symlink somewhere inside a directory dirEntries will fail when it encounters it. correct behavior should be to skip by default broken symlinks (maybe introduce an option to throw) as try/catch is expensive; or maybe populate statbuf with special values when this happens instead of throwing.

actually this problem is very annoying because we can't even write a wrapper around popFront for dirEntries that would try/catch, as if we did this there would never be an actual pop. So when we dont' have w access to fix the said broken symlinks, we're .. stuck

*** This issue has been marked as a duplicate of issue 8298 ***