[foreign-memaccess+abi] RFR: API refresh - part two [v5]

[Maurizio Cimadamore]

> After playing a bit more with the new API changes, I realized there were issues with some of the solutions proposed in [1].
> I will add more details in a separate comment, to keep the header of this PR compact.
> 
> [1] - https://git.openjdk.java.net/panama-foreign/pull/576

Maurizio Cimadamore has updated the pull request incrementally with one additional commit since the last revision:

  Update src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/ResourceScope.java
  
  Co-authored-by: Paul Sandoz <paul.d.sandoz at googlemail.com>

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

Changes:
  - all: https://git.openjdk.java.net/panama-foreign/pull/591/files
  - new: https://git.openjdk.java.net/panama-foreign/pull/591/files/f3b45ccc..c530e3f4

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=591&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=591&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/591.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/591/head:pull/591

PR: https://git.openjdk.java.net/panama-foreign/pull/591