mv (when moving between partitions) no longer fails when
operating on too many command-line-specified nonempty directories.
+ "readlink -f" is more compatible with prior implementations
+
rm (without -f) no longer hangs when attempting to remove a symlink
to a file on an off-line NFS-mounted partition.
rather than two-byte int. This makes a difference only on hosts like
Cray systems where the C short int type requires more than two bytes.
+ readlink accepts new options: --canonicalize-existing (-e)
+ and --canonicalize-missing (-m).
+
The stat option --filesystem has been renamed to --file-system, for
consistency with POSIX "file system" and with cp and du --one-file-system.