[vectorIntrinsics+compress] RFR: Merge panama-vector:vectorIntrinsics

[Jatin Bhateja]

Merge from vectorIntrinsics to vectorIntrinsics+compress branch.

This will bring in fixes for some bug-fixes needed for clean regressions in X86.

Best Regards,
Jatin

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Commit messages:
 - Merge branch 'vectorIntrinsics' of http://github.com/jatin-bhateja/panama-vector into vectorIntrinsics+compress_merge
 - Make method package private.
 - 8275025: Unable to inline vectmask convert
 - 8274569: X86 backend related incorrectness issues in legacy store mask patterns
 - Fix typo in VectorMask.laneIsSet
 - 8274631: assert(false) failed: bad AD file with -XX:UseKNLSetting

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - vectorIntrinsics+compress: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=154&range=00.0
 - panama-vector:vectorIntrinsics: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=154&range=00.1

Changes: https://git.openjdk.java.net/panama-vector/pull/154/files
  Stats: 327 lines in 7 files changed: 284 ins; 2 del; 41 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/154.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/154/head:pull/154

PR: https://git.openjdk.java.net/panama-vector/pull/154