It's not the most elegant solution in the world, but I managed to get this working. Let's say that you want version control for httpd.conf and php.ini on a *nix server is running SSH. Here's what I did. First, I created a bash script called "Show" (you must use a capital "S") somewhere in the path (I used /usr/local/sbin). It looks like this:
=== BEGIN SCRIPT ===
#! /bin/sh
echo *** HTTPD.CONF ***
cat /path/to/httpd.conf
echo *** PHP.INI ***
cat /path/to/php.ini
=== END SCRIPT ===
Don't forget to chmod a+x Show
Then I gave NCM a login to the Linux server, and told it that there is no enable password. It worked!