[3.x] Add support for Spidermonkey 78

[wohali]

Good to go, got the failing test fixed. Closes #3476

/cc @janl @dch @davisp

[davisp]

I'm pretty sure that same test was failing the last time we updated SpiderMonkey as well. Its not the greatest test and is basically showing that SpiderMonkey's garbage collection/memory efficiency is improving. I'd be on board if we just add another test function that basically blows up with the same error code rather than relying on specific memory behavior of SpiderMonkey.

[wohali]

@davisp Yeah, it was: c4aee4d

[wohali]

Got it, this is ready for review. The test was hitting the os timeout, but the easy way to fix that is to emit anything so the Erlang side doesn't think JS is hung. I then added another 500k iterations in the loop just to be on the safe side.