Monitor patches for 2018-09-01

# gpg: Signature made Sat 01 Sep 2018 12:06:52 BST
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-monitor-2018-09-01:
  monitor: no need to save need_resume
  Revert "qmp: isolate responses into io thread"
  qmp: constify qmp_is_oob()
  monitor: consitify qmp_send_response() QDict argument
  monitor: accept input on resume
  monitor: simplify monitor_qmp_setup_handlers_bh

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