RFR: 8339783: Implementation of JEP 479: Remove the Windows 32-bit x86 Port

[Alan Bateman]

On Mon, 28 Oct 2024 18:09:41 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

> 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.

src/jdk.attach/windows/native/libattach/VirtualMachineImpl.c line 246:

> 244:             CloseHandle(hProcess);
> 245:             JNU_ThrowByName(env, "com/sun/tools/attach/AttachNotSupportedException",
> 246:                 "Unable to attach to 32-bit process running under WOW64");

The comment just before this will need to be updated as the scenario as the tool side will always be 64-bit and just need to handle a 32-bit target VM.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21744#discussion_r1820548857