bug#20728: 25.0.50; grep and grep-find templates should have a place holder for the --color argument

[Eli Zaretskii]

> Date: Mon, 29 Jun 2015 19:24:08 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 20728@debbugs.gnu.org
> 
> > - Try M-x xref-find-regexp on a Windows machine (in an Elisp buffer, 
> > enter something like "xref-find-").
> > - Probably see it fail for the same reason as symref/grep.el did previously.
> > - Apply the patch below.
> > - Hopefully see it succeed and write back about that.
> 
> Will do, thanks.

Sorry for such a long delay: life intervened, and then I simply
forgot.

Yes, indeed, that patch is needed to make it work on MS-Windows.