[gtk/wip/sadiq/fixes] (39 commits) ...overlay: Add support for clipping overlay widgets

[Mohammed Sadiq <pksadiq src gnome org>]

Summary of changes:

  a70f035... GtkWindow: Handle non-square icons with height > width corr (*)
  7a5567b... Merge branch 'patch-1' into 'master' (*)
  4ab3aad... gl renderer: use w axis vector from graphene (*)
  758137b... widget: Add docs for {get,set}_focus_child (*)
  9109b0c... statusbar: Remove priv pointer (*)
  4e9a879... statusbar: Remove garbage from header file (*)
  a3987f3... bin: Remove public GtkBinPrivate typedef (*)
  d53c28b... aspectframe: Remove unused member (*)
  a1e3e9d... colorbutton: Remove priv pointer (*)
  5c24bbf... popover: Add missing close paren in docs (*)
  c0e1044... gdk: Make gdk_surface_move_to_rect public (*)
  3396c5e... SizeRequest: Round px values up for min CSS sizes (*)
  d2d4ea6... Merge branch 'wip/move-to-rect-public' into 'master' (*)
  932e5ea... Fix reference to user styles in gtkstyleprovider.h (*)
  59c8fdf... font-button: Suggest non deprecated function in docs (*)
  46d8c84... Merge branch 'master' into 'master' (*)
  b6c8943... demo: Add the sliding puzzle demo (*)
  ddad5c3... Keep aspect ratio of the image (*)
  547d63d... puzzle: Add a reshuffle button (*)
  a849ffb... Add tweaks (*)
  ebf042d... puzzle: Use plain labels (*)
  1ee23d0... puzzle: Add mouse support (*)
  085368e... Update Galician translation (*)
  cfbba2c... widget: Use priv pointer less (*)
  9d48a95... puzzle: fix some compiler warnings (*)
  6546ef3... picture: Introduce (*)
  45d78f3... video: Use a Picture instead of an Image (*)
  cbd47fa... gtk-demo: Port images demo to use a GtkPicture in places (*)
  7690c2d... gtk-demo: Make sliding puzzle demo use GtkPicture (*)
  f58c556... image: Remove gtk_image_set_keep_aspect_ratio() (*)
  884aaa2... iconhelper: Always size contents to icon size (*)
  896f72d... gtk-demo: Use GtkImages to select the puzzle (*)
  ce62278... clipboard: Remove return statements from void function (*)
  40321d3... x11: Remove useless check (*)
  b7ecfbc... quartz: Remove gtkdnd-quartz.c (*)
  4c96134... dnd: Ref the GdkDrop during the DND operation (*)
  299e2ed... docs: Add GtkEventControllerKey to index (*)
  a34a5df... picture: Don't use g_str_equal() with potential NULLs (*)
  493c801... overlay: Add support for clipping overlay widgets

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