bug#11880: 24.1.50; `even-window-heights' should be nil by default

[martin rudalics]

> As alternative to disabling it by default, I propose to
> 1) Make `window--even-window-heights' resize any window as long as that
> would only move the window(s) in the same combination (or something like
> that).

I now resize only when WINDOW and the selected window form a combination.

> 2) Restore the original window height on `quit-window'. This amounts to
> the following code at the end of `display-buffer-user-some-window':
>
>   (when window
>     (prog1
>       (window--display-buffer buffer window 'reuse)
>       (window--even-window-heights window)))

It should do that now.

martin