Problem of dependency with game_statistics explained in commentary
adding game_statistics file
game_statistics may now generate random data if nethack access is not defined. game_statistics is now included in game_result. new_actual_game_result generate a random game_result if there's no access to nethack core
Getting srand init out of game_statistics, now random generator is initialized by the caller (test_database in our case)
Merge branch 'bdd' into dev