[libvirt] [PATCH] cleanup of direct stderr logging

In a number of places we still had direct output of logs, warnings or errors, instead of using the existing error and logging infrastructure. This patches tries to clean this up, 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/