mv (fileutils) 4.1 overwrites readonly file

[Vin Shelton]

Try the following:

  touch foo bar
  chmod 444 foo bar
  mv --version  ==> mv (fileutils) 4.1
  mv foo bar

Under fileutils 4.1 this overwrites bar without any question.  Under
older versions of fileutils (4.0p, for example), this generated a
query:

  touch foo bar
  chmod 444 foo bar
  /bin/mv --version ==> mv (GNU fileutils) 4.0p
  /bin/mv foo bar ==> /bin/mv: overwrite `bar', overriding mode 0444? 

This is similar to a bug I reported on 4.0.40 where rm would not
prompt before erasing a readonly file.

If this new behavior is intentional, is there any way to get the old
behavior back?

TIA,
  vin shelton