RFR: 8273147: Update and restructure TestGCLogMessages log message list

[Thomas Schatzl]

Hi all,

  please review this change that updates the TestGCLogMessages file for more or less recently added log messages.

Test: executing test case

Thanks,
  Thomas

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Depends on: https://git.openjdk.java.net/jdk/pull/5304

Commit messages:
 - Fixes

Changes: https://git.openjdk.java.net/jdk/pull/5306/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5306&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273147
  Stats: 68 lines in 1 file changed: 39 ins; 26 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5306.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5306/head:pull/5306

PR: https://git.openjdk.java.net/jdk/pull/5306