bug#36859: Customizable fit-window-to-buffer

[martin rudalics]

> In case of an asynchronous command like vc-log and vc-diff
> postponing display-buffer might be undesirable because
> their output might be useful to see while still incomplete.

Agreed.

> OTOH, the current situation is not perfect either:
> when an asynchronous command finishes, it unexpectedly
> forces the window resizing.

Then as a rule let's avoid such resizing.  I doubt that anyone really
wanted it.  It's merely the fact that functions like
`shrink-window-if-larger-than-buffer' were written that people
started to use them wherever applicable ...

martin