Merge remote-tracking branch 'remotes/dgilbert/tags/pull-hmp-20161004' into staging

HMP pull

Just Wanpeng's pull request this time, but
this pull is as much about me checking out my
process.

# gpg: Signature made Tue 04 Oct 2016 18:24:10 BST
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <[email protected]>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-hmp-20161004:
  hmp: fix qemu crash due to ioapic state dump w/ split irqchip

Signed-off-by: Peter Maydell <[email protected]>