fix bug where GC didn't always get updated properly

fix bug where GC didn't always get updated properly

2000-11-13  Havoc Pennington  <hp@redhat.com>

	* gtk/gtktextdisplay.c (gtk_text_render_state_update): fix bug
	where GC didn't always get updated properly

	* demos/gtk-demo/textview.c (create_tags): Use subattributes
	of fonts instead of setting the entire font

	* gtk/testtext.c (fill_example_buffer): Use "size" instead of
	setting entire font

	* gtk/gtkdialog.c (gtk_dialog_add_button): Fix some warnings

	* gtk/gtktexttag.h, gtk/gtktexttag.c: Explode font_desc into
	a bunch of individually-settable font attributes. You can still
	use the "font" and "font_desc" args, they just set all the font
	attributes at once.