helper to create efficient sort subs

 Sort::Maker has two main goals: to make it easy to create correct sort
 functions, and to make it simple to select the optimum sorting algorithm for
 the number of items to be sorted. Sort::Maker generates complete sort
 subroutines in one of four styles, plain, orcish manouver, Schwartzian
 Transform and the Guttman-Rosler Transform.