[4.1.1]
+* remove portability limitations (e.g., PATH_MAX on the Hurd, fixes for
+ 64-bit systems)
+* mv now prompts before overwriting an existing, unwritable destination file
+ when stdin is a tty, unless --force (-f) is specified, as per POSIX.
* cp now ensures that the set-user-ID and set-group-ID bits are cleared for
the destination file when when copying and not preserving permissions.
* `ln -f --backup k k' gives a clearer diagnostic