[gtk] (16 commits) Created branch window-destroy

[Matthias Clasen <matthiasc src gnome org>]

The branch 'window-destroy' was created.

Summary of new commits:

  5fb2766... Stop using gtk_widget_destroyed
  7d5caeb... Drop gtk_widget_destroyed
  6f6ffa5... window: Add gtk_window_destroy
  32150b2... Use gtk_window_destroy
  a0cdd8a... Replace gtk_widget_destroy everywhere
  b6354c5... fontchooserdialog: Fix disposing
  bed3390... colorchooserdialog: Fix disposing
  9f886a8... filechooserdialog: Fix disposing
  fa403ca... popover: Fix a reference leak
  e70cc7a... window: Implement gtk_window_destroy
  056c749... widget: Drop gtk_widget_destroy
  2c06123... testsuite: add widget refcount test case
  06c1da4... window: Remove _set_has_user_ref_count
  e81ee16... nativedialog: Do not ref the transient_for parent
  f090337... Unset tooltip window earlier
  8771a83... testsuite: Clean up unexpected children