[gtk+] docs: Add Since tag to GtkWidget::draw

[Benjamin Otte <otte src gnome org>]

commit 76f2aa737ba8bf763ff722ef9094a71ca64b9e9b
Author: Benjamin Otte <otte redhat com>
Date:   Mon Jun 13 18:29:07 2011 +0200

    docs: Add Since tag to GtkWidget::draw

 gtk/gtkwidget.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index caeec32..62cabd2 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -1669,6 +1669,8 @@ gtk_widget_class_init (GtkWidgetClass *klass)
    * context passed as @cr in any way they like and don't need to
    * restore it. The signal emission takes care of calling cairo_save()
    * before and cairo_restore() after invoking the handler.
+   *
+   * Since: 3.0
    */
   widget_signals[DRAW] =
     g_signal_new (I_("draw"),