Merge remote-tracking branch 'remotes/kraxel/tags/queue/ui-pull-request' into staging

Merge remote-tracking branch 'remotes/kraxel/tags/queue/ui-pull-request' into staging

# gpg: Signature made Wed 21 Jun 2017 14:23:31 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# 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>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/queue/ui-pull-request:
  ui: Remove inclusion of "hw/qdev.h"
  console: remove do_safe_dpy_refresh
  gtk: use framebuffer helper functions.
  sdl2: use framebuffer helper functions.
  egl-headless: use framebuffer helper functions.
  egl-helpers: add helpers to handle opengl framebuffers

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