[gtk+] clarify bugfix in 2.14 for gtk_expander_get_label

[Cody Russell <bratsche src gnome org>]

commit 3fb6fbd801f6101fea746c6c21f943777e99e9e6
Author: Björn Lindqvist <bjourne gmail com>
Date:   Tue Apr 7 12:54:15 2009 -0400

    clarify bugfix in 2.14 for gtk_expander_get_label
    
    Updated documentation for gtk_expander_get_label to clarify that
    it was changed in 2.14.
---
 gtk/gtkexpander.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/gtk/gtkexpander.c b/gtk/gtkexpander.c
index ebfead7..6866f98 100644
--- a/gtk/gtkexpander.c
+++ b/gtk/gtkexpander.c
@@ -1538,6 +1538,12 @@ gtk_expander_set_label (GtkExpander *expander,
  * return value will be %NULL. This will be the case if you create an
  * empty button with gtk_button_new() to use as a container.
  *
+ * Note that this function behaved differently in versions prior to
+ * 2.14 and used to return the label text stripped of embedded
+ * underlines indicating mnemonics and Pango markup. This problem can
+ * be avoided by fetching the label text directly from the label
+ * widget.
+ *
  * Return value: The text of the label widget. This string is owned
  * by the widget and must not be modified or freed.
  *