RFR: 8304265: Implementation of Foreign Function and Memory API (Third Preview) [v24]

[Per Minborg]

> API changes for the FFM API (third preview)
> 
> ### Specdiff
> https://cr.openjdk.org/~pminborg/panama/21/v2/specdiff/overview-summary.html
> 
> ### Javadoc
> https://cr.openjdk.org/~pminborg/panama/21/v2/javadoc/api/java.base/java/lang/foreign/package-summary.html
> 
> ### Tests
> 
> - [X] Tier1
> - [X] Tier2
> - [ ] Tier3
> - [ ] Tier4
> - [ ] Tier5
> - [ ] Tier6

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

 - Merge branch 'master' into PR_21_V2
 - Update test/jdk/java/foreign/TestByteBuffer.java
   
   Co-authored-by: Andrey Turbanov <turbanoff at gmail.com>
 - Merge pull request #3 from JornVernee/IsForeignLinkerSupported
   
   rename has_port
 - rename has_port
 - Merge pull request #2 from JornVernee/WSL_BB
   
   account for missing functional in WSL in TestByteBuffer
 - account for missing mincore on WSL in TestByteBuffer
 - Merge branch 'master' into PR_21_V2
 - 8305369: Issues in zero-length memory segment javadoc section
 - 8305087: MemoryLayout API checks should be more eager
 - Merge master
 - ... and 32 more: https://git.openjdk.org/jdk/compare/9fb53adf...ba04f5cc

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

Changes: https://git.openjdk.org/jdk/pull/13079/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13079&range=23
  Stats: 13421 lines in 270 files changed: 5102 ins; 6182 del; 2137 mod
  Patch: https://git.openjdk.org/jdk/pull/13079.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13079/head:pull/13079

PR: https://git.openjdk.org/jdk/pull/13079