Merge remote-tracking branch 'remotes/kraxel/tags/pull-cve-2014-3615-20140905-1'...

Merge remote-tracking branch 'remotes/kraxel/tags/pull-cve-2014-3615-20140905-1' into staging

CVE-2014-3615: fix sanity checks in vbe (bochs dispi) and spice.

# gpg: Signature made Fri 05 Sep 2014 12:18:04 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-cve-2014-3615-20140905-1:
  spice: make sure we don't overflow ssd->buf
  vbe: rework sanity checks
  vbe: make bochs dispi interface return the correct memory size with qxl

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