bug#22613: 25.1.50; dired-aux missing require 'cl-lib

[Eli Zaretskii]

> Date: Wed, 10 Feb 2016 22:37:22 +0900 (JST)
> From: Tino Calancha <f92capac@gmail.com>
> 
> M-! echo a > foo && echo a > bar RET
> g
> % m ^\(foo\|bar\)$ RET
> Q a RET A RET

cl-mapcan is an autoloaded function, so requiring cl-lib is not the
right solution, IMO.  Some other factor is at work here.

(This problem doesn't exist on the emacs-25 branch, btw.)