Merge [ftpdir-cleanup] and [db-cleanup]
When we remove a package from a repository, it stays in the package "pool". We would like to be able to eventually remove packages from the pool, to reclaim the disk space: - `cron-jobs/ftpdir-cleanup` - `cron-jobs/db-cleanup` Both of these programs do the exact same thing. Parabola developers decided to write their own from scratch, instead of modifying `ftpdir-cleanup`. They should eventually be merged.