RFR: Merge lworld

[David Simms]

Merge jdk-16+25

Merge branch 'lworld' into type-restrictions_merge_jdk_16_25

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Commit messages:
 - Merge branch 'lworld' into type-restrictions_merge_jdk_16_25
 - Merge jdk
 - 8255936: "parsing found no loops but there are some" assertion failure with Shenandoah
 - 8256461: AbstractFileSystemProvider.getSunPathForSocketCall for empty Path returns '.'
 - 8253081: G1 fails on stale objects in archived module graph in Open Archive regions
 - 8255368: Math.exp() gives wrong result for large values on x86 32-bit platforms
 - 8256476: Assert in vmIntrinsics::flags_for with -XX:+Verbose
 - 8256435: [TESTBUG] java/foreign/TestHandshake.java fails with direct buffer memory OOM
 - 8255448: Fastdebug JVM crashes with Vector API when PrintAssembly is turned on
 - 8134630: make code and comments consistent for stack lock optimization
 - ... and 82 more: https://git.openjdk.java.net/valhalla/compare/45d36103...a8a19616

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - type-restrictions: https://webrevs.openjdk.java.net/?repo=valhalla&pr=273&range=00.0
 - lworld: https://webrevs.openjdk.java.net/?repo=valhalla&pr=273&range=00.1

Changes: https://git.openjdk.java.net/valhalla/pull/273/files
  Stats: 20483 lines in 486 files changed: 12525 ins; 5213 del; 2745 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/273.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/273/head:pull/273

PR: https://git.openjdk.java.net/valhalla/pull/273