Add gtk_widget_modify_{fg,bg,text,base,font}.

Add gtk_widget_modify_{fg,bg,text,base,font}.

Mon Aug 21 22:39:18 2000  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkwidget.[ch]: Add gtk_widget_modify_{fg,bg,text,base,font}.

	* gtk/testgtk.c (create_styles): Add a test for modifying
	the style through gtk_widget_modify_*.

	* gtk/gtkwidget.c (gtk_widget_get_modifier_style): Add
	a function to get the current modifier style.

	* gtk/gtkwidget.c (gtk_widget_modify_style): Make a copy
	of the passed in GtkRcStyle instead of ref'ing it.

	* gtk/gtkrc.[ch]: Add gtk_rc_style_copy().