Pull direction will not be updated for MPI workers

[BerndDoser]

A major difference between ThreadMPI and OpenMPI in the averaged dissociation time was reported here. Using identical seed numbers and the reproducible mode '-reprod' shows that the trajectory deviate when a new pull direction was applied. It was found that due to the following line the pull direction for the MPI workers will not be updated.

gromacs-ramd/src/gromacs/ramd/ramd.cpp

Line 28 in 224d09e

if (MASTER(cr))