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

[vicente.romero at oracle.com]

Changeset: e12479edd518
Author:    vromero
Date:      2018-12-01 13:07 -0500
URL:       http://hg.openjdk.java.net/amber/amber/rev/e12479edd518

manual merge with jep-334

! src/java.base/share/classes/java/lang/constant/AsTypeMethodHandleDesc.java
! src/java.base/share/classes/java/lang/constant/ConstantDescs.java
! src/java.base/share/classes/java/lang/constant/DirectMethodHandleDesc.java
! src/java.base/share/classes/java/lang/constant/DirectMethodHandleDescImpl.java
! src/java.base/share/classes/java/lang/constant/DynamicCallSiteDesc.java
! src/java.base/share/classes/java/lang/constant/DynamicConstantDesc.java
! src/java.base/share/classes/java/lang/constant/MethodHandleDesc.java
! src/java.base/share/classes/java/lang/invoke/MethodHandle.java