hg: amber/amber: improved error messages for records

[vicente.romero at oracle.com]

Changeset: fbf54d7428f1
Author:    vromero
Date:      2019-04-29 18:10 -0400
URL:       http://hg.openjdk.java.net/amber/amber/rev/fbf54d7428f1

improved error messages for records

! src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java
+ test/langtools/tools/javac/datum/BadRecord.java
+ test/langtools/tools/javac/datum/BadRecord.out