What Mozilla code remains to be relicensed?
Any source file in the Mozilla codebase that is not excluded, and that does not have an MPL tri-license header :-). We have sought and obtained permission to relicense from almost everyone who contributed code to Mozilla up until the date of the new licensing policy on September 19th 2001. (After that date, contribution of code was contingent on giving permission to relicense, if the code was not immediately checked into a tri-licensed file.) Once we have obtained responses from all the individuals, companies and organisations concerned, we will relicense those files for which we have received permission from all copyright holders.