hg: amber/amber/jdk: initial push enhanced-enums branch

[vicente.romero at oracle.com]

Changeset: d5c125b5f8f8
Author:    vromero
Date:      2017-03-23 10:55 -0700
URL:       http://hg.openjdk.java.net/amber/amber/jdk/rev/d5c125b5f8f8

initial push enhanced-enums branch