Moved to's for file outside of the parts folder

[Philippe Hurbain]

Files outside the parts folder (i.e. anything in /s, p, and the p subfolders) should never be used in model fiiles. Therefore for file outside of the parts folder, I thin that if we need to "move" a file we should simply make a new file, update all the references to the old file to point to the new file, and empty the old file. No "moved to" required.

We do have library precedence for moved to's in the p and s folders (mostly in the p folders)

Thoughts?

I am mostly OK, but there is a farfetched case that could happen: someone somewhere made a custom part using one of these obsoletized subparts/primitives. I don't think we need to support backwards compatibility that far.