RFR: 8359145: Implement JEP 530: Primitive Types in Patterns, instanceof, and switch (Fourth Preview) [v2]

[Aggelos Biboudis]

> Draft PR for Primitive Types in Patterns, instanceof, and switch (Fourth Preview)

Aggelos Biboudis has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  8359145: JEP 530: Implement Primitive Types in Patterns, instanceof, and switch (Fourth Preview)

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Changes:
  - all: https://git.openjdk.org/jdk/pull/27637/files
  - new: https://git.openjdk.org/jdk/pull/27637/files/d15b13e7..f1448e1b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27637&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27637&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27637.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27637/head:pull/27637

PR: https://git.openjdk.org/jdk/pull/27637