Appended _game to names of game generators in RandomGames.py.

This makes it easy to export all of the available random game
generators as RG.game_functions. Noise functions can also now be
accessed as RG.noise_functions. I used this to make all game and noise
functions available as command line options in Bootstrap.py.

I also added .1 to the default noise spreads in Bootstrap.py to conform
to Ben's experiments.