[gtk+] (12 commits) Created branch toplevel-embedding

[Tristan Van Berkom <tvb src gnome org>]

The branch 'toplevel-embedding' was created.

Summary of new commits:

  6a7f089... Allow GtkWindow to be parented if gtk_widget_set_parent_win
  1ce7cc6... Added docs to gtk_widget_set_parent_window.
  70796f8... Slightly less special casing in GtkWindow for gtk_widget_is
  0435071... Added tests/testtoplevelembed.
  3630b63... Fixed issues with "hierarchy-changed" signal.
  16f1253... Moved location of unsetting parent window inside gtk_widget
  acb71a2... Added buttons to notebook tabs in testtoplevelembed
  96b954d... Fixed focus handling on embedded windows.
  460be46... Fixed GtkWindow/GtkWidget to properly emit hierarchy change
  54f81cd... Fixed GtkFileChooserDefault to handle cases of being in an 
  f0af03f... Changes to testtoplevelembed
  e40b77b... Fixed conflict while rebasing master.