[vala] atk: Update to 2.9.3

[Rico Tzschichholz <ricotz src gnome org>]

commit 427d84627ad457e1f1fa924e1ae72a85790b4226
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jul 17 20:15:08 2013 +0200

    atk: Update to 2.9.3

 vapi/atk.vapi |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/vapi/atk.vapi b/vapi/atk.vapi
index 7ad7d18..d200154 100644
--- a/vapi/atk.vapi
+++ b/vapi/atk.vapi
@@ -65,7 +65,7 @@ namespace Atk {
                protected Object ();
                public bool add_relationship (Atk.RelationType relationship, Atk.Object target);
                public virtual uint connect_property_change_handler (Atk.PropertyChangeHandler handler);
-               public virtual unowned Atk.AttributeSet get_attributes ();
+               public virtual Atk.AttributeSet get_attributes ();
                public virtual unowned string get_description ();
                public virtual int get_index_in_parent ();
                [NoWrapper]
@@ -459,6 +459,7 @@ namespace Atk {
                public uint state;
                public uint keyval;
                public int length;
+               [CCode (cname = "string")]
                public weak string str;
                public uint16 keycode;
                public uint32 timestamp;