[gtk+] Add GDK_VERSION_3_8

[Matthias Clasen <matthiasc src gnome org>]

commit 5aff66f391aacdcb5e0f6945a346febed0a8e2a6
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 23 17:36:17 2012 -0400

    Add GDK_VERSION_3_8
    
    This macro is needed for the new AVAILABLE_IN and DEPRECATED_IN
    macros.

 gdk/gdkversionmacros.h.in |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkversionmacros.h.in b/gdk/gdkversionmacros.h.in
index 8eae9cf..fa56f9f 100644
--- a/gdk/gdkversionmacros.h.in
+++ b/gdk/gdkversionmacros.h.in
@@ -90,6 +90,16 @@
  */
 #define GDK_VERSION_3_6         (G_ENCODE_VERSION (3, 6))
 
+/**
+ * GDK_VERSION_3_8:
+ *
+ * A macro that evaluates to the 3.8 version of GDK, in a format
+ * that can be used by the C pre-processor.
+ *
+ * Since: 3.8
+ */
+#define GDK_VERSION_3_8         (G_ENCODE_VERSION (3, 8))
+
 
 /* evaluates to the current stable version; for development cycles,
  * this means the next stable target