> some vendors like to leave out the tests and not having them all under 'test' prevents that from working cleanly

Yeah, but presumably all the major distributors have long ago figured out how to do this (it's not *that* hard) and, by moving the tests now, would actually make work for them :) (Granted, that's also not that hard)

Losing the history of a bunch of files would be a much more serious concern, IMHO.  If the files can't be moved without losing history, I'de be a definite -1 on this change; otherwise, a meh -0.