Re: the big term patch

[Roland McGrath]

> I'm inclined to think that it should specifically be the bottom half's
> responsibility for updating the state variables.  That way the Right
> Thing can be done if some but not all of the changes can be made.

I think the interface we have now is that the bottom half is supposed to
modify the struct termios passed in to reflect what it really set, and then
termstate will get that.  The two are equivalent, so either way is fine by me.