hg: amber/amber: Automatic merge with sealed-types

[maurizio.cimadamore at oracle.com]

Changeset: 749031d7910f
Author:    mcimadamore
Date:      2020-02-27 05:05 +0000
URL:       https://hg.openjdk.java.net/amber/amber/rev/749031d7910f

Automatic merge with sealed-types

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! src/jdk.compiler/share/classes/com/sun/tools/javac/tree/Pretty.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeInfo.java