Adds the themes of Guy, Zangief, Akuma, Bison, Sagat, and Vega from Street Fighter IV to the game.

Most of them follow the same architecture, CPS2 theme for Control, CPS2 High Damage theme for Buildup, and SFIV character select theme for Stealth.

The exceptions are Zangief and Guy.

Guy uses the following tracks for Stealth/Control/Anticipation respectively.

And Zangief has this for his Stealth theme.