fix certificate combination to append smaller onto larger (avoids outrageous memory use when compiling the compiler collection with the new unit system)
fix certificate combination to append smaller onto larger (avoids outrageous memory use when compiling the compiler collection with the new unit system)

svn: r5374

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