Fix typo; thanks to Tim Mattox for noticing.
Add a useful test and update another
Remove erroneous use of "MPI_Aint".

There is no "MPI_Aint" in the Fortran interface.  Surprisingly, the
Intel compiler didn't choke on this, but the Absoft compiler did.
Update some CUDA-aware NEWS items.
Silence compiler warnings on 32-bit platforms. Refs #3828