[vectorIntrinsics] RFR: Post mainline merge fixes

[Jatin Bhateja]

- Post-merge fixes.
- Updating JMH micros post merge since some of the Perf templates are not part of mainline branch and depends on Unit-Test Kernels which may have been modified in mainline.
- Fixing Long*VectorTests.java tests for X86 target.

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

Commit messages:
 - Changing file permissions
 - Merge panama-vector:master fixes.

Changes: https://git.openjdk.java.net/panama-vector/pull/175/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=175&range=00
  Stats: 3282 lines in 37 files changed: 2585 ins; 336 del; 361 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/175.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/175/head:pull/175

PR: https://git.openjdk.java.net/panama-vector/pull/175