Fixed a comparison that was too strict, making the code go to the general case on lists of length 3.  (Didn't have much effect since it's only the toplevel comparison).
Fixed a comparison that was too strict, making the code go to the
general case on lists of length 3.  (Didn't have much effect since it's
only the toplevel comparison).

svn: r16899

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket