After the discussion about multiple sort criteria  I decided to
make some modifications I was needing, and also repackage the initial
port Nicolas Cellier did.
The result is the transformation of Nicolas' TAG-SortFunctions 
"experiment" to a first class project plainly named 'SortFunctions'
"Since I got absolutely zero feedback after a long thread, I assumed
it was not interesting anybody...
But my personal opinion differs: this should be included in each and
I sorry for not replying before, I also think this kind of features
should be easily discoverable in a default image, and that's why I
built a Metacello config to be included, maybe, in the MetaRepo.
Credits were preserved in the STHub project site both for Travis and Nicolas.
Esteban A. Maringolo
 I guess TAG is for Travis A. Griggs