RFR: 8339783: Implement JEP 479: Remove the Windows 32-bit x86 Port [v28]

[Magnus Ihse Bursie]

> This is the implementation of [JEP 479: _Remove the Windows 32-bit x86 Port_](https://openjdk.org/jeps/479).
> 
> This is the summary of JEP 479:
>> Remove the source code and build support for the Windows 32-bit x86 port. This port was [deprecated for removal in JDK 21](https://openjdk.org/jeps/449) with the express intent to remove it in a future release.

Magnus Ihse Bursie has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 33 commits:

 - Merge branch 'master' into impl-JEP-479
 - JVM_EnqueueOperation do not need __stdcall name lookup anymore
 - [JNI/JVM/AGENT]_[ONLOAD/ONUNLOAD/ONATTACH]_SYMBOLS are now identical on Windows and Unix, so unify them
 - Fix build_agent_function_name to not handle "@"-stdcall style names
 - buildJniFunctionName is now identical on Windows and Unix, so unify it
 - Also restore ADLC_CFLAGS_WARNINGS changes that are not needed any longer
 - Also remove __cdecl
 - Also remove __stdcall on tests
 - Replace WIN32 with _WINDOWS in sharedRuntimeTrans.cpp
 - Remove __stdcall notation
 - ... and 23 more: https://git.openjdk.org/jdk/compare/8b474971...699c641a

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Changes: https://git.openjdk.org/jdk/pull/21744/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21744&range=27
  Stats: 1885 lines in 84 files changed: 86 ins; 1572 del; 227 mod
  Patch: https://git.openjdk.org/jdk/pull/21744.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21744/head:pull/21744

PR: https://git.openjdk.org/jdk/pull/21744