more background to List<int> specializing List<Any>

[Brian Goetz]

> Brian, I did want to research the JVMLS 2014 keynote you mentioned;  is
> that you with John Rose "Evolving the JVM"?
>
> - John Rose & Brian Goetz, Evolving the JVM
> http://medianetwork.oracle.com/video/player/3730888982001

Yes, this is the one I was referring to.  While the technical picture 
has obviously progressed since we gave this talk (yay!), there's a lot 
of good background there about how we evaluate various options, and what 
constitutes a "good" solution.