[jdk17u-dev] RFR: 8297437: javadoc cannot link to old docs (with old style anchors) [v2]

[Roman Marchenko]

> Backporting to jdk17u for parity.
> 
> No tier1 regressions.
> "test/langtools/jdk/javadoc" tests are passed.
> 
> There was a conflict in src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Extern.java because of newest functions implemented in the upstream.  And additional changes have been made in TestLinkPlatform.java (lines 106, 136, 166) because of EARLIEST_VERSION=7 in jdk17.
> 
> The rest of conflicts are in copyright headers.

Roman Marchenko has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into backport-15a14884013a975707008f648b8e4864e16006ed
 - Backport 15a14884013a975707008f648b8e4864e16006ed

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1145/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1145/files/9403415e..81a688db

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1145&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1145&range=00-01

  Stats: 7732 lines in 175 files changed: 5481 ins; 820 del; 1431 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1145.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/1145/head:pull/1145

PR: https://git.openjdk.org/jdk17u-dev/pull/1145