change beginner-cond error to highlight individual cond-clause elements when the wrong number are present
change beginner-cond error to highlight individual cond-clause elements when the wrong number are present

svn: r7380

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