6502: Engine doesn't have same SPC_NBSP state as per spec

[sehugg]

The 6502 engine is missing the 'nbsp = 2' state in the spec. Fixing would require inserting it and renumbering the succeeding states, then implementing the NBSP logic.

This fix would affect save games, in that the value of SPC would be 'downgraded' on restore, possibly causing a visual glitch (?) I don't know if this is a problem in practice since save games are tied to the story's header and thus CRC.

[dstelzer]

I don't think it's a problem in practice at all. Games that save without printing a line break either before or after are rare, and the worst that happens is one erroneous space, newline, or paragraph break.