Adding whenjobs to funtoo linux.

whenjobs are a powerful but simple replacement for cronjobs (http://people.redhat.com/~rjones/whenjobs/)

also dependencies between whenjobs could be defined.

1. create ebuild
   • dependencies are dev-ml/calendar and dev-ml/ocamlnet
   • create initscript with config sourcing as whenjobs run as non-root users
   • find way to set for build a run as non-root user to execute /usr/sbin/whenjobsd (needed for whenjobs --daemon-start)
2. Test above