updated to boost license

[SVN r1622]

test/lex_performance_test.cpp

@@ -1,3 +1,10 @@
+// Copyright (c) 2003 Jan Langer
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy
+// at http://www.boost.org/LICENSE_1_0.txt)
+                                                                                
+//  See library home page at http://www.boost.org/libs/utility
+                                                                                
 #include <vector>
 #include <iostream>
 #include <string>