[libvirt] [PATCH] add missing doc for device <shareable/> option

This has been there forever, but we never documented it in the domain format page. The description is not fantastic, so improvements welcome :-) Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/