Merge branch 'qemu-cvs'

Merge branch 'qemu-cvs'

* qemu-cvs:
  Fix absolute mouse events generated by SDL frontend.
  Move block dma helpers aiocb to store dma state (Avi Kivity)
  Use vectored aiocb storage to store vector translation state (Avi Kivity)
  Implement cancellation method for dma async I/O (Avi Kivity)
  Convert vectored aio emulation to use a dedicated pool (Avi Kivity)
  Refactor aio callback allocation to use an aiocb pool (Avi Kivity)
  virtio: Allow guest to defer VIRTIO_F_NOTIFY_ON_EMPTY (Alex Williamson)
  e1000: Fix RX descriptor low threshold interrupt logic (Alex Williamson)
  x86: Add NULL check to lsl (Jan Kiszka)
  vnc: throttle screen updates. (Gerd Hoffmann)
  vnc: fix printf warnings showing up with VNC_DEBUG enabled. (Gerd Hoffmann)
  vnc: cleanup surface handling, fix screen corruption bug. (Gerd Hoffmann)
  Remove dead code