hg: valhalla/valhalla/langtools: Merge

[david.holmes at oracle.com]

Changeset: d31430e24f6e
Author:    dholmes
Date:      2017-09-20 23:55 -0400
URL:       http://hg.openjdk.java.net/valhalla/valhalla/langtools/rev/d31430e24f6e

Merge

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Utils.java
- test/jdk/jshell/MergedTabShiftTabCommandTest.java
- test/jdk/jshell/MergedTabShiftTabExpressionTest.java