hg: amber/amber: initial push constant-folding branch

[vicente.romero at oracle.com]

Changeset: b978254eaec0
Author:    vromero
Date:      2017-04-17 17:38 -0700
URL:       http://hg.openjdk.java.net/amber/amber/rev/b978254eaec0

initial push constant-folding branch