devel/mongo-cxx-driver: unbreak with boost 1.67

src/mongo/client/command_writer.cpp:68:78: error: no member named 'next' in namespace 'boost'

const std::vector<WriteOperation*>::const_iterator next = boost::next(batch_iter);
                                                          ~~~~~~~^

src/mongo/util/net/message_port.h:34:38: error: expected class name
class AbstractMessagingPort : boost::noncopyable {

^

PR: 227427
Reported by: antoine (via exp-run)