Create an executor_work object.

template<
    typename T,
    typename ExecutionContext>
executor_work< typename associated_executor< T, typename ExecutionContext::executor_type >::type > make_work(
    const T & t,
    ExecutionContext & ctx,
    typename enable_if<!is_executor< T >::value &&!is_convertible< T &, execution_context & >::value >::type *  = 0);