35 up

Typing this in TenFourFox 35. There's a couple of intermittent glitchy things with web fonts I haven't figured out and can't reproduce reliably, but the browser builds and as you can see, basically works. The next step will be to try an opt build once I've finished banging the debug build around to make sure our libvpx hacks stick, and then if I have time start on the Ion-MIPS port to carry this along to Aurora 36.