Merge remote-tracking branch 'remotes/dgilbert/tags/pull-hmp-20171030' into staging

hmp pull 2017-10-30

# gpg: Signature made Mon 30 Oct 2017 20:17:57 GMT
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <[email protected]>"
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-hmp-20171030:
  monitor: fix dangling CPU pointer
  hmp: Replace error_report_err

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