In Bitcoin 0.8.0, the above files are not used, all subdirectories must be copied to the new server. It has also been reported that the new leveldb database format is not as portable, i.e. a datadir created on Linux might not work on Windows.
Thanks for the info, deepceleron. Do you know if it is possible to copy the 0.8 blockchain to a new computer by simply pasting the blocks and chainstate directories? Any further info on whether such a transfer would work cross-platform or not?
Sorry for cross posting - I did not receive a reply to this question here:
https://bitcointalk.org/index.php?topic=143220.msg1666681#msg1666681 .
UPDATE:
https://bitcointalk.org/index.php?topic=143220.msg1694068#msg1694068