hg: jdk8/tl/langtools: 8023679: Improve error message for '_' used as a lambda parameter name

[vicente.romero at oracle.com]

Changeset: 1e6088da1740
Author:    vromero
Date:      2013-10-02 17:04 +0100
URL:       http://hg.openjdk.java.net/jdk8/tl/langtools/rev/1e6088da1740

8023679: Improve error message for '_' used as a lambda parameter name
Reviewed-by: jjg, dlsmith

! src/share/classes/com/sun/tools/javac/parser/JavacParser.java
! src/share/classes/com/sun/tools/javac/resources/compiler.properties
+ test/tools/javac/diags/examples/UnderscoreInLambdaExpression.java