Valhalla reflection API - first stab

[Maurizio Cimadamore]

Hi,
I've just pushed a new Valhalla-centric reflection API:
http://mail.openjdk.java.net/pipermail/valhalla-dev/2016-June/001968.html

I'm working on a more complete document which will provide the 
background for the design decisions we made. I hope to make it available 
within the next few days.

Cheers
Maurizio