reprovide some utility from repository.ss (nobody but the core implementation should have to directly require repository.ss)
reprovide some utility from repository.ss (nobody but the core implementation should have to directly require repository.ss)

svn: r9569

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