VGA card now saves vga.dac to the state, as the MAME palette is clobbered periodically with data from here. Changed the type of vga.dac.colour to a flat uint8_t array seeing as save_item isn't struct-friendly. Fixes Liero.
Saved more VGA flags, including vga.miscellaneous_output, which despite the vague name is needed for reading from the ports.
Fixed an enum range check miss.
Saved more i386 flags required for 32-bit save states. Fixes Jump 'n Bump.