RFR: JDK-8309964: Use directed inheritDoc for javax.lang.model API

[Joe Darcy]

Update javax.lang.model and javax.annotation.processing to use directed inhertitDoc.

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Commit messages:
 - Misc improvements.
 - Revert inadvertant change to JavaCompiler.
 - Merge branch 'master' into JDK-8309964
 - Update copyrights.
 - Merge branch 'master' into JDK-8309964
 - Checkpoint changes.
 - JDK-8309964: Use directed inheritDoc for javax.lang.model API
 - JDK-8306819: Consider disabling the compiler's default active annotation processing

Changes: https://git.openjdk.org/jdk/pull/14477/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14477&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8309964
  Stats: 352 lines in 30 files changed: 73 ins; 5 del; 274 mod
  Patch: https://git.openjdk.org/jdk/pull/14477.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14477/head:pull/14477

PR: https://git.openjdk.org/jdk/pull/14477