bug#8862: compilation-window-height no good anymore

[martin rudalics]

> In Emacs-23, enlarge-window called on the root window doesn't seem to
> signal an error either.

Horizontally only.  Try (enlarge-window 4 t) with a one-window frame.

> Maybe you'll be lucky and won't bump into bugs
> resulting from such a change, but I think you'd be safer keeping the old
> non-signaling behavior.

OK.

martin