Schwartzian transform

[Damian Conway]

> In the absence of such benchmarking (and also in the absence of any
> indication of a performance issue) I think the approach of directly
> sorting the hash refs wins merely by virtue of being so much simpler.

Agreed.

Although, I took the the use of the ST in the original code
as precisely that: an "indication of a performance issue".

Of course, given that Dermot just admitted that he's coding by pure
instinct, that inference was clearly unwarranted. ;-)

Damian