RFR: 8304265: Implementation of Foreign Function and Memory API (Third Preview) [v16]

[Per Minborg]

> API changes for the FFM API (third preview)
> 
> Specdiff:
> https://cr.openjdk.org/~pminborg/panama/21/v1/specdiff/overview-summary.html
> 
> Javadoc:
> https://cr.openjdk.org/~pminborg/panama/21/v1/javadoc/java.base/module-summary.html

Per Minborg has updated the pull request incrementally with two additional commits since the last revision:

 - Update src/java.base/share/classes/java/lang/foreign/MemorySegment.java
   
   Co-authored-by: Maurizio Cimadamore <54672762+mcimadamore at users.noreply.github.com>
 - Update src/java.base/share/classes/java/lang/foreign/MemorySegment.java
   
   Co-authored-by: Maurizio Cimadamore <54672762+mcimadamore at users.noreply.github.com>

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/13079/files
  - new: https://git.openjdk.org/jdk/pull/13079/files/c787a282..928ad35e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13079&range=15
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13079&range=14-15

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 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