bug#34516: Multi-monitor frame sets

[Juri Linkov]

>>> You should always use the workarea values for displaying emacs frames.
>
> Much easier said than done.
>
>> Ok, this patch uses the workarea instead:
>
> AFAICT, the workarea may "move" from one display to another.  So to be
> on the safe side, code should always assume the presence of a workarea
> even when there's none at the very moment.  But I have no idea whether
> the workarea size and position may change when moving from one display
> to another.

Then geometry is a safer option?