hg: amber/amber: manual merge with jep-334

[vicente.romero at oracle.com]

Changeset: 191ca8c3407e
Author:    vromero
Date:      2018-08-22 07:01 -0700
URL:       http://hg.openjdk.java.net/amber/amber/rev/191ca8c3407e

manual merge with jep-334

! src/java.base/share/classes/java/lang/constant/DynamicConstantDesc.java