[foreign-memaccess+abi] RFR: Merge master [v2]

[J.Duke]

> Hi all,
> 
> this is an _automatically_ generated pull request to notify you that there are 131 commits from the branch `master`that can **not** be merged into the branch `foreign-memaccess+abi`:
> 
> The following files contains merge conflicts:
> 
> - src/jdk.incubator.foreign/share/classes/jdk/incubator/foreign/MemoryLayout.java
> - src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/Utils.java
> - test/jdk/java/foreign/TestLayoutPaths.java
> - test/micro/org/openjdk/bench/jdk/incubator/foreign/LoopOverNonConstantFP.java
> 
> All Committers in this [project](https://openjdk.java.net/census#panama) have access to my [personal fork](https://github.com/openjdk-bot/panama-foreign) and can therefore help resolve these merge conflicts (you may want to coordinate who should do this).
> The following paragraphs will give an example on how to solve these merge conflicts and push the resulting merge commit to this pull request.
> The below commands should be run in a local clone of your [personal fork](https://wiki.openjdk.java.net/display/skara#Skara-Personalforks) of the [openjdk/panama-foreign](https://github.com/openjdk/panama-foreign) repository.
> 
> # Ensure target branch is up to date
> $ git checkout foreign-memaccess+abi
> $ git pull https://github.com/openjdk/panama-foreign.git foreign-memaccess+abi
> 
> # Fetch and checkout the branch for this pull request
> $ git fetch https://github.com/openjdk-bot/panama-foreign.git +82:openjdk-bot-82
> $ git checkout openjdk-bot-82
> 
> # Merge the target branch
> $ git merge foreign-memaccess+abi
> 
> When you have resolved the conflicts resulting from the `git merge` command above, run the following commands to create a merge commit:
> 
> $ git add paths/to/files/with/conflicts
> $ git commit -m 'Merge master'
> 
> 
> When you have created the merge commit, run the following command to push the merge commit to this pull request:
> 
> $ git push https://github.com/openjdk-bot/panama-foreign.git openjdk-bot-82:82
> 
> _Note_: if you are using SSH to push commits to GitHub, then change the URL in the above `git push` command accordingly.
> 
> Thanks,
> J. Duke

J. Duke has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 132 commits:

 - Merge branch 'foreign-memaccess+abi' into 82
 - Automatic merge of jdk:master into master
 - 8257970: Remove julong types in os::limit_heap_by_allocatable_memory
   
   Reviewed-by: stefank, tschatzl
 - 8257145: Performance regression with -XX:-ResizePLAB after JDK-8079555
   
   Co-authored-by: Junjun Lin <linjunjun at huawei.com>
   Reviewed-by: tschatzl, sjohanss
 - 8257676: Simplify WeakProcessorPhase
   
   Reviewed-by: iwalulya, ayang, tschatzl
 - 8196090: javax/swing/JComboBox/6559152/bug6559152.java fails
   
   Reviewed-by: serb
 - 8243205: Modularize JVM flags declaration
   
   Reviewed-by: kvn, coleenp, stefank
 - 8258073: x86_32 build broken after JDK-8257731
   
   Reviewed-by: iklam
 - 8247402: Documentation for Map::compute contains confusing implementation requirements
   
   Reviewed-by: prappo, martin
 - 8257731: Remove excessive include of stubRoutines.hpp
   
   Reviewed-by: coleenp, kvn
 - ... and 122 more: https://git.openjdk.java.net/panama-foreign/compare/0927cd0c...a89592d1

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

Changes: https://git.openjdk.java.net/panama-foreign/pull/412/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=412&range=01
  Stats: 31114 lines in 797 files changed: 22772 ins; 5674 del; 2668 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/412.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/412/head:pull/412

PR: https://git.openjdk.java.net/panama-foreign/pull/412