[arch-dev-public] reverse staging idea

[Paul Mattal]

Since I know there have been complaints about packages remaining in 
the ftp directories when new ones are uploaded, how about we modify 
the /arch/db-* update scripts run by the devs to move old versions 
of updated packages into ~/staging/<repo>/old?

This makes the default behavior that they stick around but aren't 
cluttering the ftp directory.

Just an idea I had that I didn't want us to lose.

- P