Streamlined Install Guide

[Stuart Ellis <s ellis fastmail co uk>]

This is a first pass at restructuring the Install Guide.

HTML:

http://mythic-beasts.com/~hobb/fedora/fedora-install-guide-en/index.html

DocBook:

http://mythic-beasts.com/~hobb/fedora/fedora-install-guide-0.6.0.tar.gz

I've put in a chapter for post-installation, with some rough text that I
wrote a while ago, basically so that we can direct the user's attention
to Websites, particular tutorials or other bits of help and advice once
they have completed the installation.