[gtk+] (4 commits) Non-fast-forward update to branch wip/baedert/children

[Timm Bäder <baedert src gnome org>]

The branch 'wip/baedert/children' 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:

  4267b86... widget: Add child_widget pointer
  816cf13... widget: Fix grab_focus for child widgets
  81db868... WIP: focus_tab_sort for GtkWIdget
  19fa1d0... togglebutton: Remove unused defines

Commits added to the branch:

  77fe425... widget: Add focus_child pointer
  e793a41... widget: Fix grab_focus for child widgets
  420a7f2... WIP: focus_tab_sort for GtkWIdget
  f7d4cf6... togglebutton: Remove unused defines