[libvirt] new test failure: QEMU XML-2-ARGV hostdev-pci-address

[Jim Meyering]

FYI, at least on my Fedora 10 system, "make check" gets one failure:

52) QEMU XML-2-ARGV hostdev-pci-address                               ... Failed
 to open file '/sys/bus/pci/devices/0000:06:12.5/vendor': No such file or directory
Failed to open file '/sys/bus/pci/devices/0000:06:12.5/device': No such file or directory
libvir: error : this function is not supported by the hypervisor: Failed to read product/vendor ID for 0000:06:12.5
FAILED

It's true, the containing directory doesn't exist:

    $ ls -1 /sys/bus/pci/devices/0000*
    /sys/bus/pci/devices/0000:00:00.0@
    /sys/bus/pci/devices/0000:00:02.0@
    /sys/bus/pci/devices/0000:00:02.1@
    /sys/bus/pci/devices/0000:00:03.0@
    /sys/bus/pci/devices/0000:00:19.0@
    /sys/bus/pci/devices/0000:00:1a.0@
    /sys/bus/pci/devices/0000:00:1a.1@
    /sys/bus/pci/devices/0000:00:1a.2@
    /sys/bus/pci/devices/0000:00:1a.7@
    /sys/bus/pci/devices/0000:00:1b.0@
    /sys/bus/pci/devices/0000:00:1c.0@
    /sys/bus/pci/devices/0000:00:1c.1@
    /sys/bus/pci/devices/0000:00:1c.2@
    /sys/bus/pci/devices/0000:00:1c.3@
    /sys/bus/pci/devices/0000:00:1c.4@
    /sys/bus/pci/devices/0000:00:1d.0@
    /sys/bus/pci/devices/0000:00:1d.1@
    /sys/bus/pci/devices/0000:00:1d.2@
    /sys/bus/pci/devices/0000:00:1d.7@
    /sys/bus/pci/devices/0000:00:1e.0@
    /sys/bus/pci/devices/0000:00:1f.0@
    /sys/bus/pci/devices/0000:00:1f.2@
    /sys/bus/pci/devices/0000:00:1f.3@
    /sys/bus/pci/devices/0000:03:00.0@
    /sys/bus/pci/devices/0000:06:00.0@
    /sys/bus/pci/devices/0000:06:03.0@
    $ readlink /sys/bus/pci/devices/0000:00:1c.4
    ../../../devices/pci0000:00/0000:00:1c.4

I'll look into it in about 30 minutes.