RFR: Merge openjdk/jdk:master

[William Kemper]

Weekly merge from upstream. Looks fine in testing.

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Commit messages:
 - Merge tag 'jdk-20+26' into merge-jdk-20-26
 - 8297731: Remove redundant check in MutableBigInteger.divide
 - 8287400: Make BitMap range parameter names consistent
 - 8297584: G1 parallel phase event for scan heap roots is sent too often
 - 8294924: JvmtiExport::post_exception_throw() doesn't deal well with concurrent stack processing
 - 8296875: Generational ZGC: Refactor loom code
 - 8297284: ResolutionErrorTable's key is wrong
 - 8297740: runtime/ClassUnload/UnloadTest.java failed with "Test failed: should still be live"
 - 8297644: RISC-V: Compilation error when shenandoah is disabled
 - 8297523: Various GetPrimitiveArrayCritical miss result - NULL check
 - ... and 86 more: https://git.openjdk.org/shenandoah/compare/f90a7701...bfd2f109

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.org/?repo=shenandoah&pr=178&range=00.0
 - openjdk/jdk:master: https://webrevs.openjdk.org/?repo=shenandoah&pr=178&range=00.1

Changes: https://git.openjdk.org/shenandoah/pull/178/files
  Stats: 15750 lines in 611 files changed: 10080 ins; 3270 del; 2400 mod
  Patch: https://git.openjdk.org/shenandoah/pull/178.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah pull/178/head:pull/178

PR: https://git.openjdk.org/shenandoah/pull/178