> In this case, the source code gives you...
Well, I'm not certain of that since I'm going off Wikipedia. If you (or you distro) is allowed to build Palemoon without modifying it and call it Palemoon then it's the same situation as Firefox. If not, that means every binary called Palemoon was either built by them and them alone (we only have their word that it really corresponds to the source code) or is illegal.
