[vectorIntrinsics] RFR: Merge panama-vector:master

[Jatin Bhateja]

Following two files have merge conflicts
- src/hotspot/cpu/aarch64/aarch64_sve_ad.m4
- src/hotspot/cpu/aarch64/aarch64_sve.ad

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Commit messages:
 - Merge branch 'master' of http://github.com/openjdk/jdk into mainline-merge
 - 8272297: FileInputStream should override transferTo() for better performance
 - 8271471: [IR Framework] Rare occurrence of "<!-- safepoint while printing -->" in PrintIdeal/PrintOptoAssembly can let tests fail
 - 8272231: G1: Refactor G1CardSet::get_card_set to return G1CardSetHashTableValue*
 - 8267833: Improve G1CardSetInlinePtr::add()
 - 8272235: G1: update outdated code root fixup
 - 8272158: SoftReference related bugs under memory pressure
 - 8272439: G1: add documentation to G1CardSetInlinePtr
 - 8272461: G1: remove empty declaration of cleanup_after_scan_heap_roots
 - 8272348: Update CDS tests in anticipation of JDK-8270489
 - ... and 325 more: https://git.openjdk.java.net/panama-vector/compare/18eda964...c82cfe92

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - vectorIntrinsics: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=111&range=00.0
 - panama-vector:master: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=111&range=00.1

Changes: https://git.openjdk.java.net/panama-vector/pull/111/files
  Stats: 62061 lines in 1087 files changed: 52119 ins; 4790 del; 5152 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/111.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/111/head:pull/111

PR: https://git.openjdk.java.net/panama-vector/pull/111