Goia v2.2 : modification of the tournament rules

As was suggested by Oliver Lewis, I changed the rule of the game to the following :
- The games are played until the end, with only superko forbiding infinite loop (I have implemented the eye rule but I chose not to use it for now, because I feel detecting eyes is a good starting point at training players, thus I'd rather have it not given a priori).
- The rule to score the game is the Tromp-Taylor rule : every stone present on the board at the end of the board are considered alive, and chinese scoring is used.

GnuGoia.2.2 9x9 for Windows
GnuGoia.2.2 9x9 for Linux