KDE volunteers said they suddenly found themselves dealing with bug reports Apple deemed too sensitive to share, new requirements for auditing code before releasing it, and demands that developers sign nondisclosure agreements before looking at some Apple code.
So you mean once KHTML devs wanted access to code that wasn't part of KHTML, they had to play by Apple's rules? Say it isn't so! Apple plays by their rules for their code, but KHTML doesn't want to play by Apple's rules for Apple code. Again, choices by KHTML to limit their own options.
I didn't knew you could change the license of code originaly under the GPL! If the code (emphasis mine) is written upon the KHTML code, then that code is also under the GPL.
Anyway, a lot of comments are off topic: the original story only dealt with making clear that Apple has not cooperated with the KHTML devs as a lot of people had imagined.