Merge remote-tracking branch 'remotes/awilliam/tags/vfio-pci-for-qemu-20140630.0...

VFIO patches: MSI-X masking performance fix, Endian fixes, fix runstate on device error

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* remotes/awilliam/tags/vfio-pci-for-qemu-20140630.0:
  vfio: use correct runstate
  vfio: Make BARs native endian
  vfio-pci: Fix MSI-X masking performance
  vfio-pci: Fix MSI/X debug code

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>