message: Check box size
  Really large boxes can result in out of memory errors.
diff: @@ -1706,6 +1706,18 @@ Thank you!\n";
  size_z > maxdim ? size_z : maxdim, gdbox);
  }
  + bool skip = false;
  + for(unsigned pos = 0; pos < 3; pos++) {
  + if(gdbox.elems[pos].n*box_granularity > 100) {
  + //we will run out of memory if the grid is too large
  + log << "WARNING: Ligand " << i << " in " << ligand_name << " has an extent greater than 100A. Skipping.\n";
  + skip = true;
  + break;
  + }
  + }
  + if(skip)
  + continue;
  +
  done(settings.verbosity, log);
  std::vector<result_info>* results =
  new std::vector<result_info>();
  