bug#23426: 25.0.93; dired-do-find-regexp doesn't find newline

[Drew Adams]

Do I understand correctly (forgive me if wrong; I have not
studied this, and my Emacs 25 build is quite old) that `A'
in Dired is now bound by default to a command that requires
a user to have an external `grep' command?  (This was not
the case previously.)