Merge remote-tracking branch 'stefanha/block' into staging

# By Fam Zheng (3) and others
# Via Stefan Hajnoczi
* stefanha/block:
  vmdk: fix VMFS extent parsing
  vmdk: Only read cid from image file when opening
  virtio: Remove unneeded memcpy
  block/raw-win32: Always use -errno in hdev_open
  blockdev: fix cdrom read_only flag
  sd: Avoid access to NULL BlockDriverState
  hmp: drop bogus "[not inserted]"

Message-id: 1382105915[email protected]
Signed-off-by: Anthony Liguori <[email protected]>