archive

Hi all,

This is to fulfill a fairly urgent client need, so if I don't get feedback in the next 12 hours or so I'm going to build this anyway, but whether I release it or not depends on feedback here. I can't find anything like it, but if anyone can think of a smarter way to achieve this with existing contrib, let me know. Here's what my client needs:

1. "Archived" in this context means moved to another physical location to free disk space
2. We want the ability to specify either a date or a time period after which files in a specific file field should be archived