Small edit to mpi.h, mostly so I can continue working from home.
Small edit to mpi.h, mostly so I can continue working from home.

eaplatanios/jelly-bean-world,eaplatanios/jelly-bean-world,eaplatanios/jelly-bean-world,eaplatanios/jelly-bean-world,eaplatanios/jelly-bean-world