[Bug-gnubg] 1-sided rollout results

[Albert Silver]

When I do a rollout of a doubling decision in an analyzed game, it only
adds the results to one side. For example, if I click on the 'Double' of
one side and do a rollout, it will update the results accordingly, but
if I then click on the take/drop of the other player, it continues to
display the previous 2-ply evaluation. Worse: it also shows the rollout
results in the statistics for the first player and the 2-ply for the
take/drop decision for the second player. This problem is also true for
any multi-ply analysis of cube decisions. 

                                                        Albert