Here's a test release that contains the multiple licenses feature: http://alpha.gnu.org/gnu/librejs/librejs-6.0.8.20141210.xpi
I've added a new section in the manual - in the latest source repo's manual you can search for "Specifying multiple licenses", or see it here: http://git.savannah.gnu.org/cgit/librejs.git/tree/doc/manual/librejs.txt#n468 Let me know if you have any problems or suggestions with this test release.. the multiple license feature seems to be working, but the way that LibreJS reads Web Labels licenses has changed and I need to make sure that nothing broke.
