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

From: Dmitry Gutov <[email-masked]>
Date: Thu, 04 Jun 2015 02:42:58 +0300

And fill it in dynamically during expansion.

This way, the caller can set grep-highlight-matches dynamically, without
recomputing grep defaults (which is expensive). This is particularly
relevant on MS-Windows, in semantic-symref-grep-use-template and
xref-collect-matches.