[libvirt] [PATCH 0/8 v3] Allow a client to connect to QEMU's VNC by passing an FD via libvirt

An update to https://www.redhat.com/archives/libvir-list/2011-October/msg01040.html New in v3: - Add feature probing before using new RPC calls - Set O_CLOSEXEC in various places - Misc typo fixes - Fix RPC protocol tests - Add docs about protocol extension