[vectorIntrinsics] RFR: Merge openjdk/panama-vector:vector-unstable

[Ningsheng Jian]

Merge

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Commit messages:
 - Merge vector-unstable into vectorIntrinsics
 - Manual merge with default
 - 8247352: improve error messages for sealed classes and records
 - 8242427: JVMTI frame pop operations should use Thread-Local Handshakes
 - 8252307: javac rejects code with annotation applicable to fields
 - 8252004: remove usage of PropertyResolvingWrapper in vmTestbase/nsk/sysdict
 - 8252725: Refactor jlink GenerateJLIClassesPlugin code
 - 8231441: AArch64: Initial SVE backend support
 - 8249694: java/lang/StringBuffer/HugeCapacity.java and j/l/StringBuilder/HugeCapacity.java tests shouldn't be @ignore-d
 - 8252521: possible race in java_suspend_self_with_safepoint_check
 - ... and 14 more: https://git.openjdk.java.net/panama-vector/compare/1af35c35...bf3d59c4

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - vectorIntrinsics: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=4&range=00.0
 - openjdk/panama-vector:vector-unstable: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=4&range=00.1

Changes: https://git.openjdk.java.net/panama-vector/pull/4/files
  Stats: 7795 lines in 158 files changed: 5881 ins; 1200 del; 714 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/4.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/4/head:pull/4

PR: https://git.openjdk.java.net/panama-vector/pull/4