hg: amber/amber: make records inherit from j.l.Record and check that no class can inherit from j.l.Record

[vicente.romero at oracle.com]

Changeset: 10f3b9bd83b8
Author:    vromero
Date:      2019-08-15 17:45 -0400
URL:       https://hg.openjdk.java.net/amber/amber/rev/10f3b9bd83b8

make records inherit from j.l.Record and check that no class can inherit from j.l.Record

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
+ test/langtools/tools/javac/records/record_superclass/RecordAsSuperclassTest.java