[gtk+] Add an index for symbols added in 3.12

[Matthias Clasen <matthiasc src gnome org>]

commit 0f64551c4943224d0877a2fefaf0e50b30597bf2
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Oct 16 23:14:57 2013 -0400

    Add an index for symbols added in 3.12

 docs/reference/gtk/gtk-docs.sgml |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/gtk-docs.sgml b/docs/reference/gtk/gtk-docs.sgml
index 3500804..ff9f151 100644
--- a/docs/reference/gtk/gtk-docs.sgml
+++ b/docs/reference/gtk/gtk-docs.sgml
@@ -428,6 +428,10 @@
     <title>Index of new symbols in 3.10</title>
     <xi:include href="xml/api-index-3.10.xml"><xi:fallback /></xi:include>
   </index>
+  <index id="api-index-3-12" role="3.12">
+    <title>Index of new symbols in 3.12</title>
+    <xi:include href="xml/api-index-3.12.xml"><xi:fallback /></xi:include>
+  </index>
 
   <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>