[gtk+] (11 commits) Non-fast-forward update to branch wip/ebassi/legacy-gl

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'wip/ebassi/legacy-gl' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  0d1aac7... gdk: Allow querying if a GL context is in legacy mode
  317bd03... gl: Store the legacy bit in the GL program data
  3942056... gl: Use older GLSL shaders with legacy contexts
  aeb4ed1... x11: Create legacy GLX contexts
  79049cf... x11: Control legacy GL context via environment variable
  02a585d... Allow testglarea to work with legacy GL contexts
  d1ecb62... docs: Improve description of gdk_gl_context_is_legacy()

Commits added to the branch:

  263cbd9... Fix accessibility not getting initialized in gtk_init() if  (*)
  dad1931... wayland: Don't ignore wl_keyboard.leave if surface is gone (*)
  d8856f1... GtkPopover: Don't apply shape on wayland (*)
  20b0b16... gdk: Allow querying if a GL context is in legacy mode
  193ea5e... gl: Store the legacy bit in the GL program data
  87bde51... gl: Use older GLSL shaders with legacy contexts
  54700c1... x11: Create legacy GLX contexts
  72cec88... Control legacy GL context via environment variable
  06f1adc... Allow testglarea to work with legacy GL contexts
  0c975e4... docs: Improve description of gdk_gl_context_is_legacy()
  12a564d... wayland: Allow falling back to compatibility EGL contexts

(*) This commit already existed in another branch; no separate mail sent