[gtk] (14 commits) Non-fast-forward update to branch bin-removal

[Matthias Clasen <matthiasc src gnome org>]

The branch 'bin-removal' 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:

  5b9afee... scrolledwindow: Add a child property
  00d592c... Use gtk_scrolled_window_set_child throughout
  3c780c7... scrolledwindow: Derive from GtkWidget
  f35c31b... builder-tool: Convert former bin children
  e058224... Add a test for bin child conversion
  ff2f142... button: Add a child property
  1f480b4... Use gtk_button_set_child throughout
  f609f08... scrolled window get_child use fixup
  6d42dd4... widget: Allow resetting layout manager types
  29aedf0... checkbutton: Remove the container implementation
  d2d1e6f... button: Derive from GtkWidget

Commits added to the branch:

  8d4ec91... scrolledwindow: Add a child property
  b02828c... Use gtk_scrolled_window_set_child throughout
  2b25a1a... scrolledwindow: Derive from GtkWidget
  993cf7c... builder-tool: Convert former bin children
  06719ef... Add a test for bin child conversion
  00c749f... button: Add a child property
  6da164a... Use gtk_button_set_child throughout
  0df93e7... scrolled window get_child use fixup
  986c698... widget: Allow resetting layout manager types
  cd8b148... checkbutton: Remove the container implementation
  6f92835... button: Derive from GtkWidget
  91bae40... window: Add a child property
  08a3af6... Use gtk_window_set_child throughout
  0656805... window: Derive from GtkWidget