Merge remote-tracking branch 'remotes/kraxel/tags/ui-20210316-pull-request' into...

Merge remote-tracking branch 'remotes/kraxel/tags/ui-20210316-pull-request' into staging

vnc+spice: password-secret option.
bugfixes for cocoa, vnc, opengl.

# gpg: Signature made Tue 16 Mar 2021 05:37:58 GMT
# gpg:                using RSA key A0328CFFB93A17A79901FE7D4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/ui-20210316-pull-request:
  ui/cocoa: Comment about modifier key input quirks
  ui: fold qemu_alloc_display in only caller
  ui: honour the actual guest display dimensions without rounding
  ui: use client width/height in WMVi message
  ui: avoid sending framebuffer updates outside client desktop bounds
  ui: add more trace points for VNC client/server messages
  ui/cocoa: Do not exit immediately after shutdown
  opengl: Do not convert format with glTexImage2D on OpenGL ES
  ui: deprecate "password" option for SPICE server
  ui: introduce "password-secret" option for SPICE server
  ui: introduce "password-secret" option for VNC servers

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