RFR: 8255561: add tests to check binary compatibility rules for records

[Vicente Romero]

Hi all,

Please review this change. It is providing compatibility tests for records in particular section: (13.4.27 Evolution of Record Classes)[http://cr.openjdk.java.net/~gbierman/8246771/8246771-20200928/specs/records-jls.html#jls-13.4.27].

Thanks,
Vicente

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Commit messages:
 - minor edit
 - Merge branch 'master' into JDK-8255561
 - 8255561: add tests to check binary compatibility rules for records

Changes: https://git.openjdk.java.net/jdk/pull/1082/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1082&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255561
  Stats: 307 lines in 1 file changed: 307 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1082.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1082/head:pull/1082

PR: https://git.openjdk.java.net/jdk/pull/1082