Oh, sorry, I thought the comment I was responding to was nested under the 'freeablo.net' discussion, and not the main thread. You're right that this person is distributing stuff they shouldn't be. I'm guessing it will be removed from github shortly.
The guy on Github is distributing the source files which have a Blizzard copyright notice on them saying not to distribute them.
Which is really weird. Because the code is reverse-engineered and I'm 99% sure the author used Hex-Rays Decompiler (due to variable names, etc).