[3/4] include: Add twain 2.x header for use in data sources.

[Alexandre Julliard]

Vincent Povirk <vincent at codeweavers.com> writes:

> It seemed cleaner to me to do it with a separate header, because it
> enforces the requirement that our builtin DSM is 1.x and uses no 2.x
> features. But I can do it the other way if you prefer.

Yes, I don't think that duplicating the header is making anything
cleaner.

-- 
Alexandre Julliard
julliard at winehq.org