Bug 553573 – Add orientation API to GtkBox

Bug 553573 – Add orientation API to GtkBox

2008-10-07  Michael Natterer  <mitch@imendio.com>

	Bug 553573 – Add orientation API to GtkBox

	* gtk/gtkbox.[hh]: implement the GtkOrientable interface and
	swallow all code from GtkHBox and GtkVBox. Add gtk_box_new()
	which takes a GtkOrientation argument. Also move the newly
	added "spacing_set" boolean from struct GtkBox to the new
	private struct.

	* gtk/gtkhbox.[ch]
	* gtk/gtkvbox.[ch]: remove all code except the constructor and
	call gtk_orientable_set_orientation() in init().

	* gtk/gtk.symbols: add gtk_box_new().

svn path=/trunk/; revision=21596