Calice v0.1.2

+ added a driver for:
    + Warriors of fate
    + Rockman, the power battle (Japan)
    + Megaman, the power battle
 
 + fixed driver for:
    + Dynasty wars (Japan)
    + Quiz and dragons (World)
    + Pnickies (Japan)
    + Capcom world 2 (Japan)
 
 + fixed YM2151 sound support. Now, it sounds lots better.
   Note that it is disabled by default, since it slows down
   the emulation a lot. However, It can be activated manually.
 
 + preliminary driver for:
    + street fighter zero (cps changer) by Gabriel Cabra