bugfix: cast hash value of hostname from uint32_t to positive int (dividing by two). of course this weakens the hash but there's nothing to about that because MPI_Comm_split requires a positive signed int as color. fixes #68
bugfix: cast hash value of hostname from uint32_t to positive int (dividing by two). of course this weakens the hash but there's nothing to about that because MPI_Comm_split requires a positive signed int as color. fixes #68

RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST,RRZE-HPC/GHOST