* sysdeps/mach/hurd/bits/fcntl.h
[__USE_GNU] (O_NOFOLLOW, O_DIRECTORY): New macros.
* hurd/hurdlookup.c (__hurd_file_name_lookup): If O_NOFOLLOW is set,
set O_NOTRANS as well.
(__hurd_file_name_lookup_retry): At successful end of lookup,
if O_NOFOLLOW set, io_stat the resultant port and fail with ENOENT if
it is a translated node not owned by root.
(__hurd_file_name_lookup): If O_DIRECTORY is set, put a trailing slash
on the file name passed to LOOKUP.
791cfdb726