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

[Drew Adams]

> Of course, when we drop frame-local variables this problem
> will disappear.
> 
> Maybe we should live with the "selected_frame->selected_window !=
> selected_window" problem until we get rid of frame-local vars.

And just why have you decided to drop frame-local vars?

I don't use them - just wondering.  Who have they hurt?
Why were they created?  Is that purpose no longer valid?
Does no one use them for anything?