message: helper: Implement Comm::AllGatherValues in terms of our encapsulation
diff: @@ -97,8 +97,7 @@ void Comm::GathervVectors(const std::vector<T> &in, std::vector<T> &out,
  template <class T>
  std::vector<T> Comm::AllGatherValues(const T source) const
  {
  - int size;
  - SMPI_Comm_size(m_MPIComm, &size);
  + int size = this->Size();
  std::vector<T> output(size);
  T sourceCopy = source; // so we can have an address for rvalues
  