Integrated: Merge jdk16

[Jesper Wilhelmsson]

Merge change from JDK 16

-------------

Commit messages:
 - Merge
 - 8258094: AIX build fails after 8257602
 - 8258092: Link to early access platform documentation in TestHtmlTableTags.java
 - 8254350: CompletableFuture.get may swallow InterruptedException
 - 8258111: Problemlist compiler/blackhole tests for -Xcomp until JDK-8258101 is fixed
 - 8257596: Clarify trusted final fields for record classes
 - 8257919: [JVMCI] profiling info didn't change after reprofile
 - 8257598: Clarify what component values are used in Record::equals
 - 8258060: Update @jls tags for renamed/renumbered sections
 - 8256641: CDS VM operations do not lock the heap
 - ... and 3 more: https://git.openjdk.java.net/jdk/compare/2c3ae19a...b0ad1bcd

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.java.net/?repo=jdk&pr=1775&range=00.0
 - jdk16: https://webrevs.openjdk.java.net/?repo=jdk&pr=1775&range=00.1

Changes: https://git.openjdk.java.net/jdk/pull/1775/files
  Stats: 875 lines in 42 files changed: 644 ins; 154 del; 77 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1775.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1775/head:pull/1775

PR: https://git.openjdk.java.net/jdk/pull/1775