fix unit test build on windows

include/libtorrent/kademlia/node.hpp

@@ -174,7 +174,7 @@ struct count_peers
 	}
 };
 	
-class node_impl : boost::noncopyable
+class TORRENT_EXPORT node_impl : boost::noncopyable
 {
 typedef std::map<node_id, torrent_entry> table_t;
 typedef std::map<node_id, dht_immutable_item> dht_immutable_table_t;

include/libtorrent/kademlia/rpc_manager.hpp

@@ -65,7 +65,7 @@ struct null_observer : public observer
 
 class routing_table;
 
-class rpc_manager
+class TORRENT_EXPORT rpc_manager
 {
 public:
 	typedef bool (*send_fun)(void* userdata, entry&, udp::endpoint const&, int);