* configure.in: Version number should start from 0:0:0 before
	a public release.

	* src/glade-clipboard-view.c (glade_clipboard_view_button_press_cb):
	* src/glade-editor.c (glade_editor_table_append_items):
	* src/glade-signal-editor.c (glade_signal_editor_load_widget):
	* src/glade-project-view.c:
	* src/glade-widget.c:
	* src/main.c: Get rid of some compilation warnings, correct some
	inconsistent coding style, plus some silly things.

	* src/glade-project.c: Correct some project loading behaviours. Use
	glade_widget_class_container_get_all_children instead of
	glade_widget_class_container_get_children.

	* src/glade-utils.c (glade_util_container_get_all_children):
	glade_widget_class_container_get_all_children should use
	gtk_container_forall instead of gtk_container_foreach.

	* src/glade-widget-class.c: Fix some class inhertance bugs.

	* src/glade-widget.[ch] (glade_widget_get_pack_property): New.

	* widgets/gtk+.xml:
	* src/glade-gtk.c: Add some custom add-functons that know how to
	handle placeholder. Handlers for "special child type" are there,
	we just need to wait and re-enable them once placeholder has
	GladeWidget.