ghe-rsync-backup uses rules file on stdin instead of args
ghe-rsync-backup uses rules file on stdin instead of args

This is quite a bit a bit cleaner and opens up the possibility of
adding non-repository rules for __special__ data directories. We
don't have to maintain a list of auxiliary files or __special__
files with this approach either which should be a lot more future
proof.

github/backup-utils,Teino1978-Corp/https-github.com-Teino1978-Corp-backup-utils,spotify/backup-utils,github/backup-utils