[jdk17u-dev] RFR: 8283525: http://tools.ietf.org/html/* URLs return 404

[Goetz Lindenmaier]

I backport this for parity with 17.0.12-oracle.

I backport the change in 21 which merged three related changes.

I had to resolve ChangeLog.  Unfortunately in 21, "8283525: http://tools.ietf.org/html/* URLs return 404"
changed 'http' to https' in many files including this one, but this file should not 
be touched as it is not owned by our project.   But might be clean anyways.

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

Commit messages:
 - Backport 63fec5da27994b05a58ce1abcfe07a8ed8bc497b

Changes: https://git.openjdk.org/jdk17u-dev/pull/2300/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2300&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8283525
  Stats: 2219 lines in 26 files changed: 609 ins; 1036 del; 574 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2300.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2300/head:pull/2300

PR: https://git.openjdk.org/jdk17u-dev/pull/2300