[Mpi3-rma] RMA proposal 1 update

[Rajeev Thakur]

> > I meant that MPI_Accumulate should be specified here, either in the 
> > yes or no column.
>
> I think "can be used only" says all. We also don't say that 
> it can't be used in reductions etc..

We do. The text says 

"MPI_NO_OP can be used only in MPI_GET_ACCUMULATE and
MPI_ACCUMULATE_GET, not in collective reduction operations, such as
MPI_REDUCE and others." 

It begs the question what about MPI_Accumulate?

Rajeev