##### buffer_registration::buffer_registration (2 of 3 overloads)

Register buffers with an execution context.

    template<
        typename ExecutionContext>
    buffer_registration(
        ExecutionContext & ctx,
        const MutableBufferSequence & buffer_sequence,
        const allocator_type & alloc = allocator_type(),
        typename constraint< is_convertible< ExecutionContext &, execution_context & >::value >::type  = 0);