Created the `vebose` mode for diagnostics.

CGB is now going to boot using Boytacean ROM by default.
Allows better image and open source only boot.

Allows speedup and FPS measuring.

Uses a different file for the C structs of Libretro.
Makes it easier to manage the structure these structures.

Was creating major memory issues, including in the save of state files.

Adds warning on failing to set callbacks.

Should allow simple testing of the core.

Allows blargg's test ROM to pass.