* gladeui/glade-design-layout.[ch]:
    o added glade_design_layout_selection_set() (removed project dependency)
    o removed PointerRegion enum
    o reworked cursors pointer in an array to ease seting them
    o reemplazed glade_design_layout_get_pointer_region () with gdl_get_activity_from_pointer()
    o removed call to gtk_widget_size_allocate() in glade_design_layout_update_child()
      fixes rendering glith while resizing
    o precompute child offset to optimize from-embeder to-embeder handlers
    o draw "pretty" selection

  * gladeui/glade-design-view.c: set layout selection on project's selection-changed signal

  * gladeui/glade-app.[ch]:
    o added glade_app_do_event()
    o set custom gdk event handler to marshal event to GladeDesignLayouts using
      glade_design_layout_do_event()

  * gladeui/glade-utils.[ch]: removed unused function glade_util_draw_selection_nodes()

  * gladeui/glade-widget-adaptor.c: removed g_signal_override_class_handler() event marshalling hack.