This PR adapts the functions for file-based combination for three systems
(where easily possible, for arbitrary numbers of systems).
It is assumed that Outgroup Sparse Grid Reduce is used for the widely-distributed combination (so each system has to write only one file, which is then copied to all other systems).
This PR adapts the functions for file-based combination for three systems (where easily possible, for arbitrary numbers of systems). It is assumed that Outgroup Sparse Grid Reduce is used for the widely-distributed combination (so each system has to write only one file, which is then copied to all other systems).