hg: valhalla/valhalla/langtools: * fix bug with nestmate attribute containing duplicate entries

[maurizio.cimadamore at oracle.com]

Changeset: fbe9fd9cc23d
Author:    mcimadamore
Date:      2017-08-14 11:29 +0100
URL:       http://hg.openjdk.java.net/valhalla/valhalla/langtools/rev/fbe9fd9cc23d

* fix bug with nestmate attribute containing duplicate entries
* Add optional support to emit invokevirtual instead of invokespecial to access private nestmate members (flag: "-XDvirtualizePrivateAccess")

! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassWriter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/Gen.java