RFR: Merge jdk

[Mikael Vidstedt]

Merge in jdk-16+18

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Commit messages:
 - Merge jdk
 - 8253829: Wrong length compared in SSPI bridge
 - 8239090: Improve CPU feature support in VM_Version
 - 8252001: remove usage of PropertyResolvingWrapper in vmTestbase/nsk/jdi
 - 8253700: spurious "extends Throwable" at end of Optional.orElseThrow method declaration
 - 8238737: remove DeoptimizeAllClassesRate from CTW library
 - 8253815: Remove unused HeapRegionManager::_num_committed from SA
 - 8253375: OSX build fails with Xcode 12.0 (12A7209)
 - 8253768: Deleting unused pipe_class definitions in adl-file (x86_64.ad).
 - 8253183: Fragile memory barrier selection for some weak memory model platforms
 - ... and 310 more: https://git.openjdk.java.net/portola/compare/0e2f7b57...c70c0c45

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.java.net/?repo=portola&pr=16&range=00.0
 - jdk: https://webrevs.openjdk.java.net/?repo=portola&pr=16&range=00.1

Changes: https://git.openjdk.java.net/portola/pull/16/files
  Stats: 75969 lines in 2929 files changed: 30620 ins; 36170 del; 9179 mod
  Patch: https://git.openjdk.java.net/portola/pull/16.diff
  Fetch: git fetch https://git.openjdk.java.net/portola pull/16/head:pull/16

PR: https://git.openjdk.java.net/portola/pull/16