[libvirt] PATCH: first patch to update the architecture documentation

Relatively small update done in the train yesterday, currently this just updates the project description, makes a spearate page for goals and terminology. I intent to continue to revamp the architecture pages with an user view of the architecture, presenting the library/daemon dichotomy, and then a separate page more on the driver internals. Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/