Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2017-03-22-v3' into staging

Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2017-03-22-v3' into staging

QAPI patches for 2017-03-22

# gpg: Signature made Wed 22 Mar 2017 18:25:15 GMT
# gpg:                using RSA key 0x3870B400EB918653
# 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-qapi-2017-03-22-v3:
  qapi: Fix QemuOpts visitor regression on unvisited input
  qom: Avoid unvisited 'id'/'qom-type' in user_creatable_add_opts
  tests: Expose regression in QemuOpts visitor
  test-qobject-input-visitor: Cover visit_type_uint64()
  Revert "hostmem: fix QEMU crash by 'info memdev'"
  qapi: Fix string input visitor regression for empty lists
  qapi2texi: Fix translation of *strong* and _emphasized_
  tests/qapi-schema: Systematic positive doc comment tests
  tests/qapi-schema: Make test-qapi.py print docs again
  qapi: Drop unused QAPIDoc member optional
  qapi2texi: Fix to actually fail when 'doc-required' is false
  qapi: Drop excessive Make dependencies on qapi2texi.py
  MAINTAINERS: Add myself for files I touched recently
  keyval: Document issues with 'any' and alternate types
  test-keyval: Cover alternate and 'any' type
  keyval: Improve some comments
  test-keyval: Tweaks to improve list coverage

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