[jdk17u-dev] RFR: Merge jdk17u:master

[Goetz Lindenmaier]

Merge build tag 17.0.18-ga from jdk17u to jdk17u-dev

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Commit messages:
 - Merge
 - 8375448: Remove designator DEFAULT_PROMOTED_VERSION_PRE=ea for release 17.0.18
 - 8374209: [17u,21u] Backout JDK-8361748 due to JDK-8373727
 - 8359501: Enhance Handling of URIs
 - 8368032: Enhance Certificate Checking
 - 8365280: Enhance JOptionPane
 - 8362632: Improve HttpServer Request handling
 - 8362308: Enhance Bitmap operations
 - 8365271: Improve Swing supports
 - 8365058: Enhance CopyOnWriteArraySet
 - ... and 3 more: https://git.openjdk.org/jdk17u-dev/compare/4892ed4b...5eadcfa1

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4236&range=00.0
 - jdk17u:master: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4236&range=00.1

Changes: https://git.openjdk.org/jdk17u-dev/pull/4236/files
  Stats: 1299 lines in 38 files changed: 996 ins; 149 del; 154 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4236.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4236/head:pull/4236

PR: https://git.openjdk.org/jdk17u-dev/pull/4236