DNS zone files in Git

[Owen Taylor <otaylor redhat com>]

I got really annoyed by not having any version history for the DNS zone
files.

I didn't want to take the time to do a full solution as described in:

 https://bugzilla.gnome.org/show_bug.cgi?id=592015

So I took the level-zero approach of just doing a 'git init' in 
/var/named/chroot/master and importing the files there.

Practically speaking, this means:

  If you change one or more zone files, once you are happy
  with your changes, do 'git commit -a' and describe what 
  you changed, in the format:

  Subject
  <blank line>
  Details

I'd certainly like to see someone pick up the task of doing a more
comprehensive job!

- Owen