#20 Pair players from different groups

[Rasmus Myklebust]

In some tournament two or more groups play together
but results are calculated separatley. It would be usefull
if SOSS could do this and still keep the groups
seperated. Results should be calculated for the groups
that the players are entered in and pairing should use
the union of the specified groups. Not all groups need to
be in this union. Example there are four groups (L, M, H ,
G). In group G there are only 3 players. It is decided to
let group G and H play together. But prices are given out
for each group separatly. Groups L and M are not
affected.
This function is specially important when using
gp-calculations.