hg: valhalla/valhalla/langtools: Fix: abstract conditional methods are missing ACC_ABSTRACT

[maurizio.cimadamore at oracle.com]

Changeset: 9bec39f205ed
Author:    mcimadamore
Date:      2016-04-21 17:51 +0100
URL:       http://hg.openjdk.java.net/valhalla/valhalla/langtools/rev/9bec39f205ed

Fix: abstract conditional methods are missing ACC_ABSTRACT
Fix: Methodref emitted instead of InterfaceMethodref when receiver is type-var with interface bound
Fix: String concatenation doesn't work on any type-variables

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Types.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/SpecializeTypes.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/PoolWriter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/StringConcat.java