Sorry for the extra week delay. BenQuark has been extremely busy, so I've had to help him out with some of the code. Unfortunately, this also meant a quick crash course in getting github working correctly on my system again.
Anyhoo, we've created a new dataflash library on GitHub. You can pull it via the links that are provided on the wiki:
http://asynclabs.com/wiki/index.php?title=Dataflash_libraryNote that it is pretty basic at the moment, but it has the necessary items to access the flash. It is tagged as v1.0.0. Please report any issues here so that we can take a look. The reading of the manufacturer ID from the flash is a pretty good starting point, as it's a known value (1F 26).