[jdk11u] RFR: Merge jdk11u-dev:master

[Goetz Lindenmaier]

Bring changes for build tag 4 to jdk11u

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

Commit messages:
 - 8213718: [TEST] Wrong classname in vmTestbase/nsk/stress/except/except002 and except003
 - 8219804: java/net/MulticastSocket/Promiscuous.java fails intermittently due to NumberFormatException
 - 8232782: Shenandoah: streamline post-LRB CAS barrier (aarch64)
 - 8249548: backward focus traversal gets stuck in button group
 - 8265756: AArch64: initialize memory allocated for locals according to Windows AArch64 stack page growth requirement in template interpreter
 - 8263136: C4530 was reported from VS 2019 at access bridge
 - 8261072: AArch64: Fix MacroAssembler::get_thread convention
 - 8248816: C1: Fix signature conflict in LIRGenerator::strength_reduce_multiply
 - 8248657: Windows: strengthening in ThreadCritical regarding memory model
 - 8250824: AArch64: follow up for JDK-8248414
 - ... and 18 more: https://git.openjdk.java.net/jdk11u/compare/3a32efcd...c55b1e5c

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.java.net/jdk11u/pull/9/files
  Stats: 13670 lines in 121 files changed: 11678 ins; 1434 del; 558 mod
  Patch: https://git.openjdk.java.net/jdk11u/pull/9.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u pull/9/head:pull/9

PR: https://git.openjdk.java.net/jdk11u/pull/9