Scene nodes now persist their order.

Implemented error handling and insertion logic for KRContext::createNode
Refactored KRNode::m_childNodes to be a std::list rather than a std::set
Added stub function, KRNode::createNode, which accepts a KrCreateNodeInfo structure

kraken/public/kraken.h

@@ -109,10 +109,11 @@ typedef enum
 
 typedef enum
 {
-  KR_SCENE_NODE_INSERT_BEFORE,
+  KR_SCENE_NODE_INSERT_BEFORE = 0,
   KR_SCENE_NODE_INSERT_AFTER,
-  KR_SCENE_NODE_INSERT_FIRST_CHILD,
-  KR_SCENE_NODE_INSERT_LAST_CHILD,
+  KR_SCENE_NODE_PREPEND_CHILD,
+  KR_SCENE_NODE_APPEND_CHILD,
+  KR_SCENE_NODE_INSERT_MAX_ENUM
 } KrSceneNodeInsertLocation;
 
 typedef int KrResourceMapIndex;