[atk] Add ATK_RELATION_NODE_PARENT_OF relationship.

[Li Yuan <liyuan src gnome org>]

commit d0685fe0721cd90151c99399b58ca24f5987d50a
Author: Joanmarie Diggs <joanmarie diggs gmail com>
Date:   Fri Nov 6 16:38:39 2009 +0800

    Add ATK_RELATION_NODE_PARENT_OF relationship.
    
    Bug #569427.

 atk/atkrelationtype.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/atk/atkrelationtype.h b/atk/atkrelationtype.h
index ad34bfc..44e44bd 100755
--- a/atk/atkrelationtype.h
+++ b/atk/atkrelationtype.h
@@ -37,6 +37,7 @@ G_BEGIN_DECLS
  * ATK_RELATION_LABELLED_BY: Indicates an object is labelled by one or more target objects.
  * ATK_RELATION_MEMBER_OF: Indicates an object is a member of a group of one or more target objects.
  * ATK_RELATION_NODE_CHILD_OF: Indicates an object is a cell in a treetable which is displayed because a cell in the same column is expanded and identifies that cell.
+ * ATK_RELATION_NODE_PARENT_OF: Indicates an object is a cell in a treetable and is expanded to display other cells in the same column.
  * ATK_RELATION_FLOWS_TO: Indicates that the object has content that flows logically to another
  *  AtkObject in a sequential way, (for instance text-flow).
  * ATK_RELATION_FLOWS_FROM: Indicates that the object has content that flows logically from
@@ -64,6 +65,7 @@ typedef enum
   ATK_RELATION_LABELLED_BY,
   ATK_RELATION_MEMBER_OF,
   ATK_RELATION_NODE_CHILD_OF,
+  ATK_RELATION_NODE_PARENT_OF,
   ATK_RELATION_FLOWS_TO,
   ATK_RELATION_FLOWS_FROM,
   ATK_RELATION_SUBWINDOW_OF,