[Libvir] [PATCH] Fix libvirtd --config / -f option

As well as fixing the --config/-f option for libvirtd, this also changes an abort() into a meaningful error message. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903