bug#13225: 24.3.50; Non-selected window has not mode-line-inactive face

[martin rudalics]

> Here's the connection: in order for the redisplay code to use the proper
> value of (frame-local) variables, it needs to `select-frame' on the
> frame being redisplayed.

Ahh, sure.

> Actually, now that I think about it, maybe the right fix is to remove
> this ensure_selected_frame.  It would be one more step towards removing
> frame-local variables (just like we already disallowed variables that
> are both buffer-local and frame-local), but still without removing them
> altogether.  After all, I don't think that the existing uses of
> frame-local vars affect the redisplay.
>
> I've just made this change.

So we can be sure that redisplay now nowhere changes the selected frame
or the selected window?

martin