repo-send fails to create database

repo-send will fail to create the database if the repository has a none existent database. For example. if testing has been merged and cleaned and is fresh with no files, adding packages will fail.

---: Found no repo database for repository linux-testing at:
linux-testing/os/i686/linux-testing.db.tar.gz
---: Found no repo database for repository linux-testing at:
linux-testing/os/x86_64/linux-testing.db.tar.gz

[Blub]

After merging we should just create an empty database (touch-ing the files works)
But it would be good if creating (or recreating) a repository in general was possible. But for that I'd like more fine-graind permission settings first. And since we're only 3 committers... ;)