added copyrights

[SVN r25810]

example/permutation_iter_example.cpp

@@ -1,3 +1,8 @@
+// Copyright (C) 2004 Jeremy Siek <jsiek@cs.indiana.edu>
+// Distributed under 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)
+
 #include <iostream>
 #include <vector>
 #include <deque>