bug#22307: wildcards dir-locals causes significant build slow-down in some cases

[Eli Zaretskii]

unblock 24655 by 22307
thanks

> From: Glenn Morris <rgm@gnu.org>
> Date: Mon, 04 Jan 2016 20:24:23 -0500
> 
> Package: emacs
> Version: 25.0.50
> 
> commit 2e8488858c (allow wildcards in dir-locals) caused a significant
> (~20%) build slow down in some cases.
> 
> Ref thread:
> http://lists.gnu.org/archive/html/emacs-devel/2015-12/msg00636.html 

Having read that thread, and given the one and a half years since the
original report, this doesn't look like a problem that should block
the release of Emacs 26.1.

Thanks.