Merge remote-tracking branch 'remotes/armbru/tags/pull-qmp-2021-02-04' into staging

QMP patches patches for 2021-02-04

# gpg: Signature made Thu 04 Feb 2021 12:21:47 GMT
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qmp-2021-02-04:
  qmp: Resume OOB-enabled monitor before processing the request
  qmp: Add more tracepoints
  qmp: Fix up comments after commit 9ce44e2ce2
  docs/interop/qmp-spec: Document the request queue limit
  qobject: braces {} are necessary for all arms of this statement
  qobject: spaces required around that operators
  qobject: code indent should never use tabs
  qobject: open brace '{' following struct go on the same line
  monitor/qmp-cmds.c: Don't include ui/vnc.h

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