[Libvir] [PATCH] Check availability of driver calls

This is a repost of a patch I sent before which adds the ability to check for driver features. This is completely internal to libvirt and does not add any public APIs. The original discussion is here: https://www.redhat.com/archives/libvir-list/2007-July/thread.html#00437 and continues here: https://www.redhat.com/archives/libvir-list/2007-August/thread.html#00000 Daniel Veillard said: feature); My objection to that is here: https://www.redhat.com/archives/libvir-list/2007-August/msg00000.html 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