[gtk+] (22 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:

  21e1612... widget: Add children and sibling pointers
  1e55e27... widget: Iterate over child widgets instead of gtk_container
  3ccd0c6... widget: Implement show_all
  63e6d03... widget: Implement map/unmap with child widgets
  758adbe... widget: Check for containerness before calling container AP
  0629078... widget: Unparent widgets in dispose()
  642ce35... widget: Implement create_path for widgets with no-container
  6db8f57... inspector: Show child widgets of widgets
  efea3bd... widget: Add widget version of gtk_container_snapshot_child
  67c6d9c... switch: Use GtkLabels for on/off labels
  5651ce5... Remove gtk_container_snapshot_child
  a13ddcd... widget: Remove gtk_widget_invalidate_style_context
  d8eae28... widget: Remove _gtk_widget_supports_clip
  93daff4... Move gtk_container_propagate_draw to GtkWidget
  67a5131... spinbutton: Remove _get_panels
  7727cd6... spinbutton: Use widgets for up/down buttons
  26e4ff6... Add and use gtk_widget_set_focus_child
  9e975c5... Add and use gtk_widget_get_focus_child

Commits added to the branch:

  9e3bd03... win32: Fix tilt from Wintab devices (*)
  3313020... Updated Czech translation (*)
  8fb9d15... wintab tilt: Check return location for validity (*)
  368e011... wintab: init only after the display is assigned (*)
  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
  46e844f... spinbutton: Use widgets for up/down buttons
  cdb8c55... Add and use gtk_widget_set_focus_child
  d710da7... Add and use gtk_widget_get_focus_child

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