v3:
use <pcihole64> sub-element of the root PCI controller
with 'unit' attribute, defaulting to KiB
v2:
https://www.redhat.com/archives/libvir-list/2013-August/msg00565.html
Use 'pcihole64' attribute of the root PCI controller
instead of <pcihole64> element in domain features.
v1:
https://www.redhat.com/archives/libvir-list/2013-August/msg00510.html
https://bugzilla.redhat.com/show_bug.cgi?id=990418
Ján Tomko (4):
Move virDomainParseScaledValue earlier
Allow controller XML parsing to use XPath context
Add pcihole64 element to root PCI controllers
Build QEMU command line for pcihole64