Initialize DOUBLE_BUFFERED flag to on.

Initialize DOUBLE_BUFFERED flag to on.

Fri Jun  2 12:56:01 2000  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkwidget.c (gtk_widget_init): Initialize DOUBLE_BUFFERED
	flag to on.

	* gtk/gtkwidget.c (gtk_widget_draw) gtk/gtkmain.c (gtk_main_do_event):
	Honor DOUBLE_BUFFRED_FLAG

	* gtk/gtkwidget.c (gtk_widget_set_double_buffered): Add a
	function to set the DOUBLE_BUFFERED flag.

	* gtk/gtkwidget.h: Add GTK_DOUBLE_BUFFERED flag to indicate whether
	or not exposes done on the widget should be double-buffered.

	* gtk/gtkenums.h (GtkTextDirection): Reverse order of enumerations
	to be what would be expected. (Fixes problem with a
	g_return_if_fail() validating a TextDirection enumeration)