[libvirt] [PATCH 0/4] Use a unix socket for the qemu monitor

Hi, In order to support qemu NIC hotplug, we're planning on sending tap file descriptors across the monitor to qemu. If that sounds like magic, it is! One of the most mystical and magical unix features around. See SCM_RIGHTS in unix(7). The upshot is that we need to switch to using a unix socket for the qemu monitor. This patch series does just that, while handling the tricky scenario where you start a vm with an old version of libvirtd, update to a newer version and restart libvirtd. See also: https://fedoraproject.org/wiki/Features/KVM_NIC_Hotplug Cheers, Mark.