no more dependency on intitializer_list header

public/tier1/utlinitlist.h

@@ -9,7 +9,54 @@
 #ifndef TIER1_UTL_INITIALIZER_LIST_H
 #define TIER1_UTL_INITIALIZER_LIST_H
 
-#include "initializer_list"
+#include "stddef.h"
+
+// from GCC 
+namespace std
+{
+	template<class _E>
+	class initializer_list
+	{
+	public:
+		typedef _E 		value_type;
+		typedef const _E& 	reference;
+		typedef const _E& 	const_reference;
+		typedef size_t 		size_type;
+		typedef const _E* 	iterator;
+		typedef const _E* 	const_iterator;
+
+	private:
+		iterator			_M_array;
+		size_type			_M_len;
+
+		constexpr initializer_list(const_iterator __a, size_type __l)
+			: _M_array(__a), _M_len(__l) { }
+
+	public:
+		constexpr initializer_list() noexcept
+			: _M_array(0), _M_len(0) { }
+
+		constexpr size_type
+			size() const noexcept { return _M_len; }
+
+		constexpr const_iterator
+			begin() const noexcept { return _M_array; }
+
+		constexpr const_iterator
+			end() const noexcept { return begin() + size(); }
+	};
+
+	template<class _Tp>
+		constexpr const _Tp*
+		begin(initializer_list<_Tp> __ils) noexcept
+		{ return __ils.begin(); }
+
+	template<class _Tp>
+		constexpr const _Tp*
+		end(initializer_list<_Tp> __ils) noexcept
+		{ return __ils.end(); }
+}
+
 template<typename T>
 using CUtlInitializerList = std::initializer_list<T>;