Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-20160301-1' into staging

Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-20160301-1' into staging

qapi: fix input-send-event and promote to stable

# gpg: Signature made Tue 01 Mar 2016 08:19:52 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-input-20160301-1:
  qapi: promote input-send-event to stable
  qapi: rename InputAxis values.
  qapi: rename input buttons
  qapi: switch x-input-send-event from console to device+head
  console: add & use qemu_console_lookup_by_device_name

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