Merge all hash changes from trunk.

[SVN r46343]

hash/test/link_test.cpp

@@ -1,9 +1,9 @@
 
-// Copyright 2005-2007 Daniel James.
+// Copyright 2005-2008 Daniel James.
 // 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 <boost/functional/hash.hpp>
 
 extern int f();
-int main() { return f(); }
+int main(int, char**) { return f(); }