Move 'functional' headers and update paths

examples/books.cpp

@@ -4,7 +4,7 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #include "./books.hpp"
-#include <boost/functional/hash.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <cassert>
 
 // If std::unordered_set was available:

examples/point.cpp

@@ -8,7 +8,7 @@
 #undef NDEBUG
 #endif
 
-#include <boost/functional/hash.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <cassert>
 
 // This example illustrates how to use boost::hash_combine to generate a hash

examples/portable.cpp

@@ -8,7 +8,7 @@
 #undef NDEBUG
 #endif
 
-#include <boost/functional/hash.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <cassert>
 
 // This example illustrates how to customise boost::hash portably, so that

examples/template.hpp

@@ -6,7 +6,7 @@
 // This is an example of how to write a hash function for a template
 // class.
 
-#include <boost/functional/hash_fwd.hpp>
+#include <boost/container_hash/hash_fwd.hpp>
 
 template <typename A, typename B>
 class my_pair