[jdk11u-dev] RFR: Merge jdk11u:master

[Andrew John Hughes]

Merge `jdk-11.0.30+7` / `jdk-11.0.30-ga`

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Commit messages:
 - Merge jdk11u:master
 - 8368032: Enhance Certificate Checking
 - 8365271: Improve Swing supports
 - 8365058: Enhance CopyOnWriteArraySet
 - 8364214: Enhance polygon data support
 - 8362632: Improve HttpServer Request handling
 - 8362308: Enhance Bitmap operations
 - 8359501: Enhance Handling of URIs
 - 8364660: ClassVerifier::ends_in_athrow() should be removed
 - 8341496: Improve JMX connections
 - ... and 1 more: https://git.openjdk.org/jdk11u-dev/compare/18b30dbc...e1f65f38

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/jdk11u-dev/pull/3140/files
  Stats: 1061 lines in 32 files changed: 947 ins; 32 del; 82 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/3140.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/3140/head:pull/3140

PR: https://git.openjdk.org/jdk11u-dev/pull/3140