[Nut-upsuser] Solaris/NUT 'wall' behaviour

[Arjen de Korte]

>> @Huge: Could you post a diff for the change you made?
>
> Not the biggest change in the world....

I didn't expect it to be, but it is better to be sure.

> [huge at anubis ~/Prog/nut/nut-2.2.1/clients]: diff upsmon.c upsmon.c.orig
> 125c125
> <       wf = popen("wall -a", "w");
> ---
>>       wf = popen("wall", "w");

Thanks! I will commit some autoconf stuff to handle this automatically if
we find that we're on Solaris.

Best regards, Arjen