Fix bug #6297 - owner of sticky directory cannot delete files created by others. The reason we couldn't delete was we were erroring out early if requestor was not the owner of the file we wanted to delete, instead of checking if the requestor owned the directory as well. If either of these is true, we must go on and check the ACL. Karolin, this is a must for 3.4.0 and also 3.3.next. I'll update the bug report with patches for 3.4.0 and 3.3.next and ask vl to review. Jeremy.
(cherry picked from commit
966a51da8998cfd15875ba047b7f765c84b914dd)