Apply patch from Nils Barth fixing event return values. (#51041)

Apply patch from Nils Barth fixing event return values. (#51041)

Tue Mar 27 22:36:07 2001  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkwidget.h gtk/gtkrange.h: Apply patch from
	Nils Barth fixing event return values. (#51041)

	* gtk/gtkwidget.c: Fix some return values for default
	functions.

	* gtk/gtk[vh]scrollbar.c gtk/gtk[vh]range.c: Fix
	return values for trough_keys functions.

	* gtk/gtkwidget.h (struct _GtkWidgetClass): Fix return
	value for add_accelerator (shoudl have been a void
	return.)

	* gtk/gtkcellrenderer.[ch]: gtkcellrenderertoggle.h:
	Fix return type of EVENT.

	* gtk/gtkmarshal.list gtk/gtktexttag.c: Make EVENT
	signal return a boolean.