[gtk+] (54 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:

  e207c71... widget: Add children and sibling pointers
  685ae6a... widget: Iterate over child widgets instead of gtk_container
  37b653e... widget: Implement show_all
  fd2ae11... widget: Implement map/unmap with child widgets
  ad38480... widget: Check for containerness before calling container AP
  5977837... widget: Unparent widgets in dispose()
  aefe3d3... widget: Implement create_path for widgets with no-container
  acb29bd... inspector: Show child widgets of widgets
  f453ffd... widget: Add widget version of gtk_container_snapshot_child
  75667ca... switch: Use GtkLabels for on/off labels
  60f1590... Remove gtk_container_snapshot_child
  6ac91c6... widget: Remove gtk_widget_invalidate_style_context
  da87c1b... widget: Remove _gtk_widget_supports_clip
  e2bb0ae... Move gtk_container_propagate_draw to GtkWidget
  062e1b0... spinbutton: Remove _get_panels
  ad6a55a... spinbutton: Use widgets for up/down buttons
  aee22d6... Add and use gtk_widget_set_focus_child
  cd8d849... Add and use gtk_widget_get_focus_child
  cb4566b... widget: Remove unused adjust_* vfuncs
  06703be... Remove gtk_widget_get_preferred_height_and_baseline_for_wid
  5e63b61... widget: Stop exporting gtk_widget_draw_internal
  05d0c04... widget: Remove gtk_widget_style_get_property

Commits added to the branch:

  eb5b8b2... Adwaita: progressbar style fix (*)
  5ab1806... HC: really use radial-gradient() in place of -gtk-gradient( (*)
  cb1a349... HC: progressbar style fix (*)
  8cb96de... window: unrealize renderer before destroying GDK window (*)
  b7869c6... gdk: Move GdkDrawingContext definition to gdktypes.h (*)
  4850271... API: Remove gtk_cairo_should_draw_window() (*)
  4dedafb... drawingcontext: Add a private struct (*)
  ef75ca2... API: gdk: Remove gdk_window_process_updates() (*)
  2a27b7e... API: Remove gdk_window_process_all_updates() (*)
  0cb35bf... gdk: Only draw toplevels (*)
  0e37d67... text handle: Don't leak adjustments (*)
  1dded6d... notebook: Don't leak arrow gadgets (*)
  3a947fa... menu: Don't leak check menu items (*)
  10a7c65... Update Russian translation (cherry picked from commit dd3cf (*)
  c14c9ac... inspector: ensure controller is a GtkGesture (*)
  593b75f... GtkLabelAccessible: Initialize link before setting parent (*)
  1af817e... inspector: Respect text-scaling-factor value initially (*)
  3414f10... Drop the GDK_PRIVATE_CALL mechanism (*)
  ae29d4d... gdk: Use stricter checks for begin_draw_frame() (*)
  39200e7... wayland: Place subsurfaces relative to their parent (*)
  4b6e70b... gdk: Get rid of all mentions of process_all_updates() (*)
  d7876bd... inspector: Remove leftover GDK_PRIVATE_CALL()s (*)
  624e0e1... gdk: Rewrite docs some more (*)
  cae8fc7... Build: Add wayland to GSKs dependencies (*)
  4939cfd... Make gtk-encode-symbolic-svg work for icons with dotted nam (*)
  7ebbd07... Adwaita: make rubberband selection work again for libgd app (*)
  8161f8d... rendericon: Pass the scale factor when rendeirng textures (*)
  e2881d1... docs: fix docs of functions to convert layout_index <-> tex (*)
  82b2bf2... docs: fix a parameter name of GtkEntry::populate-popup (*)
  91e5f29... widget: Add children and sibling pointers
  fb94b69... widget: Iterate over child widgets instead of gtk_container
  aa9be65... widget: Implement show_all
  dce5ccd... widget: Implement map/unmap with child widgets
  d3eb0b6... widget: Check for containerness before calling container AP
  d4a13c9... widget: Unparent widgets in dispose()
  75a6d3c... widget: Implement create_path for widgets with no-container
  231a329... inspector: Show child widgets of widgets
  1374c19... widget: Add widget version of gtk_container_snapshot_child
  04e62d1... switch: Use GtkLabels for on/off labels
  bb88a7f... Remove gtk_container_snapshot_child
  88a41e3... widget: Remove gtk_widget_invalidate_style_context
  3238a5e... widget: Remove _gtk_widget_supports_clip
  1ed8a31... Move gtk_container_propagate_draw to GtkWidget
  35a8671... spinbutton: Remove _get_panels
  cc20731... spinbutton: Use widgets for up/down buttons
  041ee63... widget: Remove unused adjust_* vfuncs
  4ffe5d4... Remove gtk_widget_get_preferred_height_and_baseline_for_wid
  2291a6f... widget: Stop exporting gtk_widget_draw_internal
  56588fe... widget: Remove gtk_widget_style_get_property
  fc90814... widget: Add gtk_widget_get_children_clip
  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

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