Merge remote-tracking branch 'remotes/kraxel/tags/pull-sdl-3' into staging

sdl2: add support for text consoles

# gpg: Signature made Mon 02 Jun 2014 15:35:20 BST 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-sdl-3:
  sdl2: textinput + terminal
  sdl2: make Ctrl-Alt-<nr> hotkeys show and hide windows
  console: add kbd_put_string_console
  console: add kbd_put_qcode_console

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