Document that a size of (GtkIconSize)-1 means don't scale.

Document that a size of (GtkIconSize)-1 means don't scale.

Tue Jan 29 19:04:41 2002  Owen Taylor  <otaylor@redhat.com>

        * gtk/gtkstyle.c (gtk_style_render_icon): Document that
        a size of (GtkIconSize)-1 means don't scale.

        * gtk/gtkstyle.c (gtk_default_render_icon): Obey the
        -1 convention.

        * gtk/gtkimage.c (gtk_image_expose): Pass in -1 to
        gtk_style_render_icon() to make sure that we catch it
        obviously if the style's render function tries to
        scale.