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diff --git a/external/vpc/public/tier1/utlmap.h b/external/vpc/public/tier1/utlmap.h
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+++ b/external/vpc/public/tier1/utlmap.h
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+//========= Copyright � 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Header: $
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef UTLMAP_H
+#define UTLMAP_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "tier0/dbg.h"
+#include "utlrbtree.h"
+
+//-----------------------------------------------------------------------------
+//
+// Purpose:	An associative container. Pretty much identical to std::map.
+//
+//-----------------------------------------------------------------------------
+
+// This is a useful macro to iterate from start to end in order in a map
+#define FOR_EACH_MAP( mapName, iteratorName ) \
+	for ( int iteratorName = (mapName).FirstInorder(); (mapName).IsUtlMap && iteratorName != (mapName).InvalidIndex(); iteratorName = (mapName).NextInorder( iteratorName ) )
+
+// faster iteration, but in an unspecified order
+#define FOR_EACH_MAP_FAST( mapName, iteratorName ) \
+	for ( int iteratorName = 0; (mapName).IsUtlMap && iteratorName < (mapName).MaxElement(); ++iteratorName ) if ( !(mapName).IsValidIndex( iteratorName ) ) continue; else
+
+struct base_utlmap_t
+{
+public:
+	static const bool IsUtlMap = true; // Used to match this at compiletime 
+};	
+
+#if defined( GNUC ) && defined( DEBUG )
+const bool base_utlmap_t::IsUtlMap SELECTANY;
+#endif
+
+template <typename K, typename T, typename I = unsigned short> 
+class CUtlMap : public base_utlmap_t
+{
+public:
+	typedef K KeyType_t;
+	typedef T ElemType_t;
+	typedef I IndexType_t;
+
+	// Less func typedef
+	// Returns true if the first parameter is "less" than the second
+	typedef bool (*LessFunc_t)( const KeyType_t &, const KeyType_t & );
+	
+	// constructor, destructor
+	// Left at growSize = 0, the memory will first allocate 1 element and double in size
+	// at each increment.
+	// LessFunc_t is required, but may be set after the constructor using SetLessFunc() below
+	CUtlMap( int growSize = 0, int initSize = 0, LessFunc_t lessfunc = 0 )
+	 : m_Tree( growSize, initSize, CKeyLess( lessfunc ) )
+	{
+	}
+	
+	CUtlMap( LessFunc_t lessfunc )
+	 : m_Tree( CKeyLess( lessfunc ) )
+	{
+	}
+	
+	void EnsureCapacity( int num )							{ m_Tree.EnsureCapacity( num ); }
+
+	// gets particular elements
+	ElemType_t &		Element( IndexType_t i )			{ return m_Tree.Element( i ).elem; }
+	const ElemType_t &	Element( IndexType_t i ) const		{ return m_Tree.Element( i ).elem; }
+	ElemType_t &		operator[]( IndexType_t i )			{ return m_Tree.Element( i ).elem; }
+	const ElemType_t &	operator[]( IndexType_t i ) const	{ return m_Tree.Element( i ).elem; }
+	KeyType_t &			Key( IndexType_t i )				{ return m_Tree.Element( i ).key; }
+	const KeyType_t &	Key( IndexType_t i ) const			{ return m_Tree.Element( i ).key; }
+
+	
+	// Num elements
+	unsigned int Count() const								{ return m_Tree.Count(); }
+	
+	// Max "size" of the vector
+	IndexType_t  MaxElement() const							{ return m_Tree.MaxElement(); }
+	
+	// Checks if a node is valid and in the map
+	bool  IsValidIndex( IndexType_t i ) const				{ return m_Tree.IsValidIndex( i ); }
+	
+	// Checks if the map as a whole is valid
+	bool  IsValid() const									{ return m_Tree.IsValid(); }
+	
+	// Invalid index
+	static IndexType_t InvalidIndex()						{ return CTree::InvalidIndex(); }
+	
+	// Sets the less func
+	void SetLessFunc( LessFunc_t func )
+	{
+		m_Tree.SetLessFunc( CKeyLess( func ) );
+	}
+	
+	// Insert method (inserts in order)
+	IndexType_t  Insert( const KeyType_t &key, const ElemType_t &insert )
+	{
+		Node_t node;
+		node.key = key;
+		node.elem = insert;
+		return m_Tree.Insert( node );
+	}
+	
+	IndexType_t  Insert( const KeyType_t &key )
+	{
+		Node_t node;
+		node.key = key;
+		return m_Tree.Insert( node );
+	}
+
+	// Find method
+	IndexType_t  Find( const KeyType_t &key ) const
+	{
+		Node_t dummyNode;
+		dummyNode.key = key;
+		return m_Tree.Find( dummyNode );
+	}
+	
+	// Remove methods
+	void     RemoveAt( IndexType_t i )						{ m_Tree.RemoveAt( i ); }
+	bool     Remove( const KeyType_t &key )
+	{
+		Node_t dummyNode;
+		dummyNode.key = key;
+		return m_Tree.Remove( dummyNode );
+	}
+	
+	void     RemoveAll( )									{ m_Tree.RemoveAll(); }
+	void     Purge( )										{ m_Tree.Purge(); }
+
+	// Purges the list and calls delete on each element in it.
+	void PurgeAndDeleteElements();
+		
+	// Iteration
+	IndexType_t  FirstInorder() const						{ return m_Tree.FirstInorder(); }
+	IndexType_t  NextInorder( IndexType_t i ) const			{ return m_Tree.NextInorder( i ); }
+	IndexType_t  PrevInorder( IndexType_t i ) const			{ return m_Tree.PrevInorder( i ); }
+	IndexType_t  LastInorder() const						{ return m_Tree.LastInorder(); }		
+	
+	// If you change the search key, this can be used to reinsert the 
+	// element into the map.
+	void	Reinsert( const KeyType_t &key, IndexType_t i )
+	{
+		m_Tree[i].key = key;
+		m_Tree.Reinsert(i);
+	}
+
+	IndexType_t InsertOrReplace( const KeyType_t &key, const ElemType_t &insert )
+	{
+		IndexType_t i = Find( key );
+		if ( i != InvalidIndex() )
+		{
+			Element( i ) = insert;
+			return i;
+		}
+		
+		return Insert( key, insert );
+	}
+
+	void Swap( CUtlMap< K, T, I > &that )
+	{
+		m_Tree.Swap( that.m_Tree );
+	}
+
+
+	struct Node_t
+	{
+		Node_t()
+		{
+		}
+
+		Node_t( const Node_t &from )
+		  : key( from.key ),
+			elem( from.elem )
+		{
+		}
+
+		KeyType_t	key;
+		ElemType_t	elem;
+	};
+	
+	class CKeyLess
+	{
+	public:
+		CKeyLess( LessFunc_t lessFunc ) : m_LessFunc(lessFunc) {}
+
+		bool operator!() const
+		{
+			return !m_LessFunc;
+		}
+
+		bool operator()( const Node_t &left, const Node_t &right ) const
+		{
+			return m_LessFunc( left.key, right.key );
+		}
+
+		LessFunc_t m_LessFunc;
+	};
+
+	typedef CUtlRBTree<Node_t, I, CKeyLess> CTree;
+
+	CTree *AccessTree()	{ return &m_Tree; }
+
+protected:
+	CTree 	   m_Tree;
+};
+
+//-----------------------------------------------------------------------------
+
+// Purges the list and calls delete on each element in it.
+template< typename K, typename T, typename I >
+inline void CUtlMap<K, T, I>::PurgeAndDeleteElements()
+{
+	for ( I i = 0; i < MaxElement(); ++i ) 
+	{
+		if ( !IsValidIndex( i ) ) 
+			continue; 
+
+		delete Element( i );
+	}
+
+	Purge();
+}
+
+//-----------------------------------------------------------------------------
+
+// This is horrible and slow and meant to be used only when you're dealing with really
+// non-time/memory-critical code and desperately want to copy a whole map element-by-element
+// for whatever reason.
+template < typename K, typename T, typename I >
+void DeepCopyMap( const CUtlMap<K,T,I>& pmapIn, CUtlMap<K,T,I> *out_pmapOut )
+{
+	Assert( out_pmapOut );
+
+	out_pmapOut->Purge();
+	FOR_EACH_MAP_FAST( pmapIn, i )
+	{
+		out_pmapOut->Insert( i, pmapIn[i] );
+	}
+}
+
+#endif // UTLMAP_H