bug#45539: 26.3; `add-to-ordered-list': Add optional arg for :test predicate for hash table

[Drew Adams]

> > I don't understand.  One of us is confused, I think.
> 
> Yeah, that was me.  I totally misread what the function is doing.  I'll
> revert the patch and add the predicate function like you suggested.

Thanks.

I know the feeling.  And when I looked at it
again, after your mail, I began to wonder...

And double thanks for adding the optional TEST-PRED arg.