Save multiple states

[redxeth]

Not sure if this is already on the developer to-do list, but thought I would add as an issue here.

Basically want ability to save multiple states without leaving a game and being able to load any game state while in a game. The power button menu is fine, just needs more options.

• Volume
• Brightness
• Close Emulator
• Reset Game
• Power Down
• Change Rom
• Save State
• Load State
• Choose State Slot