[gtk+] Add deprecation notes

[Carlos Garnacho <carlosg src gnome org>]

commit 1915a19503a888e264d1c18ee2e0b10bbaac011a
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Nov 25 14:38:02 2010 -0500

    Add deprecation notes

 docs/reference/gtk/tmpl/gtkrc.sgml |    4 ++++
 gtk/gtkstyle.c                     |    2 ++
 2 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/tmpl/gtkrc.sgml b/docs/reference/gtk/tmpl/gtkrc.sgml
index e146d31..b89710a 100644
--- a/docs/reference/gtk/tmpl/gtkrc.sgml
+++ b/docs/reference/gtk/tmpl/gtkrc.sgml
@@ -10,6 +10,10 @@ GTK+ provides resource file mechanism for configuring
 various aspects of the operation of a GTK+ program
 at runtime.
 </para>
+<para>
+In GTK+ 3.0, resource files have been deprecated and replaced
+by CSS-like style sheets, which are understood by #GtkCssProvider.
+</para>
 
 <refsect2><title>Default files</title>
 <para>
diff --git a/gtk/gtkstyle.c b/gtk/gtkstyle.c
index a363cc7..3c8cdc5 100644
--- a/gtk/gtkstyle.c
+++ b/gtk/gtkstyle.c
@@ -59,6 +59,8 @@
  *
  * Usually applications should not need to use or modify the #GtkStyle of their
  * widgets.
+ *
+ * In GTK+ 3.0, GtkStyle has been deprecated and replaced by #GtkStyleContext.
  */