And to follow up, of course for an easy life, you could just release everything under the GNU Affero GPL.  But I applaud your desire to release under a permissive license.  It will only really benefit anyone, though, where there are significant amounts of self-contained new permissively licensed (category 3) code that would be useful to some other project that for what ever reason couldn't (or didn't want to) use any ATI-derived code.