RFR: 8300543 Compiler Implementation for Pattern Matching for switch [v9]

[Jan Lahoda]

> This is the first draft of a patch for JEP 440 and JEP 441. Changes included:
> 
>  - the pattern matching for switch and record patterns features are made final, together with updates to tests.
>  - parenthesized patterns are removed.
>  - qualified enum constants are supported for case labels.
> 
> This change herein also includes removal record patterns in for each loop, which may be split into a separate PR in the future.

Jan Lahoda has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 42 commits:

 - Updating MatchException javadoc.
 - Merge branch 'master' into JDK-8300543
 - Reverting use of record patterns in enhanced for loop.
 - Cleanup: reflecting review feedback.
 - Merge branch 'master' into JDK-8300543
 - Reflecting review changes.
 - Adding test.
 - Removing redundant continue, as noted on the review.
 - Replacing use of mutable callsite with a mutable state.
 - Reflecting review feedback.
 - ... and 32 more: https://git.openjdk.org/jdk/compare/a87262ef...79bbd717

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Changes: https://git.openjdk.org/jdk/pull/13074/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13074&range=08
  Stats: 4262 lines in 159 files changed: 2025 ins; 1722 del; 515 mod
  Patch: https://git.openjdk.org/jdk/pull/13074.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13074/head:pull/13074

PR: https://git.openjdk.org/jdk/pull/13074