hg: amber/amber: adapting to new extractor bootstrap

[vicente.romero at oracle.com]

Changeset: 2140069460ec
Author:    vromero
Date:      2019-06-21 11:37 -0400
URL:       http://hg.openjdk.java.net/amber/amber/rev/2140069460ec

adapting to new extractor bootstrap

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Lower.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/util/Names.java