* lib/openat.h (rpl_fstatat): New macro, if [HAVE_OPENAT && ! LSTAT_FOLLOWS_SLASHED_SYMLINK. (fstatat): Define to rpl_fstatat under the same conditions, unless COMPILING_FSTATAT. * m4/openat.m4 (gl_FUNC_OPENAT): Compile fstatat.c too, if fstatat seems to have the bug. * lib/fstatat.c: New file. * modules/openat (Files): Add it.