[belorn]

Looking at the repo now, it seems to include both the LGPL and BSD header on those files mentioned in the diff.

Just a guess, but maybe someone was initially confused, and removed the BSD license rather than simply adding the LGPL license?

[protomyth]

Probably, it seems a common thing with the BSD that people forget they cannot remove the header without all the authors permissions.

If someone was going to fork it, they probably should go back before the license change and solve whatever bug fixes in an independent manner just to avoid the whole thing.