hg: amber/amber/langtools: Ensure that pattern binding variables are final

[gavin.bierman at oracle.com]

Changeset: 38b9735da6ec
Author:    gbierman
Date:      2017-07-20 16:54 +0100
URL:       http://hg.openjdk.java.net/amber/amber/langtools/rev/38b9735da6ec

Ensure that pattern binding variables are final

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/MatchBindingsComputer.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! test/tools/javac/patterns/ImpossibleTypeTest.java
+ test/tools/javac/patterns/PatternVariablesAreFinal.java
+ test/tools/javac/patterns/PatternVariablesAreFinal.out
+ test/tools/javac/patterns/PatternVariablesAreFinal2.java