RFR: 8347408: Create an internal method handle adapter for system calls with errno [v6]

[Per Minborg]

> Going forward, converting older JDK code to use the relatively new FFM API requires system calls that can provide `errno` and the likes to explicitly allocate a MemorySegment to capture potential error states. This can lead to negative performance implications if not designed carefully and also introduces unnecessary code complexity.
> 
> Hence, this PR proposes to add a _JDK internal_ method handle adapter that can be used to handle system calls with `errno`, `GetLastError`, and `WSAGetLastError`.
> 
> It currently relies on a thread-local cache of MemorySegments to allide allocations. If, in the future, a more efficient thread-associated allocation scheme becomes available, we could easily migrate to that one.
> 
> Here are some benchmarks:
> 
> 
> Benchmark                              Mode  Cnt   Score   Error  Units
> CaptureStateUtilBench.explicitFail     avgt   30  42.184 ? 0.998  ns/op
> CaptureStateUtilBench.explicitSuccess  avgt   30  42.278 ? 1.490  ns/op
> CaptureStateUtilBench.tlFail           avgt   30  23.594 ? 0.774  ns/op
> CaptureStateUtilBench.tlSuccess        avgt   30  12.135 ? 0.107  ns/op
> 
> 
> Explicit allocation:
> 
>         try (var arena = Arena.ofConfined()) {
>             return (int) HANDLE.invoke(arena.allocate(4), 0, 0);
>         }
> 
> 
> Thread Local (tl):
> 
>         return (int) ADAPTED_HANDLE.invoke(arena.allocate(4), 0, 0);
> 
> 
> Tested and passed tiers 1-3.

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

 - Clean up benchmark
 - Fix allocation problem in benchmark

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/22391/files
  - new: https://git.openjdk.org/jdk/pull/22391/files/4821c2f2..f128c912

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22391&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22391&range=04-05

  Stats: 11 lines in 1 file changed: 2 ins; 7 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/22391.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22391/head:pull/22391

PR: https://git.openjdk.org/jdk/pull/22391