[gtk] (17 commits) Non-fast-forward update to branch wip/matthiasc/can-focus

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/matthiasc/can-focus' 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:

  83884c3... Add more focus chain tests
  7f7d0c9... root: Reorganize focus handling
  25ac126... window: Make set_focus equal to grab_focus
  ca5146e... Stop setting can-focus in ui files
  2bf663e... inspector: Remove can-focus from ui files
  51f5def... inspector: Drop more uses of can-focus
  538b83f... testsuite: Stop using can-focus
  4515c9f... a11y tests: Stop using can-focus
  39314cc... reftests: Stop using can-focus
  d0288fb... widget: Drop the :is-focus property
  640e096... testsuite: Stop setting :has-focus
  8ffcd43... widget: Make the :has-focus property readonly
  c479a80... wip: Make can-focus recursive

Commits added to the branch:

  3f15472... notbook: Fix a bug in focus handling
  0d66b94... Add more focus chain tests
  8ae3c2a... root: Reorganize focus handling
  ae6f32f... window: Make set_focus equal to grab_focus
  500b973... Stop setting can-focus in ui files
  b1f47c8... inspector: Remove can-focus from ui files
  ca61bf2... inspector: Drop more uses of can-focus
  5caa532... testsuite: Stop using can-focus
  b1bfa39... a11y tests: Stop using can-focus
  9f0b645... reftests: Stop using can-focus
  7597f7e... widget: Drop the :is-focus property
  3e14f41... testsuite: Stop setting :has-focus
  f790a26... widget: Make the :has-focus property readonly
  9613804... gizmo: Allow passing changing focus behavior
  8960744... widget: Add common focus vfunc implementations
  040e433... Change the default value of GtkWidget:can-focus
  7b5db52... Reinstate expected focus behavior