[vectorIntrinsics] RFR: 8265312: Unsigned comparison operators [v2]

[Paul Sandoz]

> Add unsigned comparison operators to VectorOperators and add intrinsic support on x64.

Paul Sandoz has updated the pull request incrementally with two additional commits since the last revision:

 - Merge pull request #6 from sviswa7/unsigned-comparison-operators
   
   Implement review comments from Jatin
 - Implement review comments from Jatin

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Changes:
  - all: https://git.openjdk.java.net/panama-vector/pull/68/files
  - new: https://git.openjdk.java.net/panama-vector/pull/68/files/0386036d..8b8eedd7

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=68&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=68&range=00-01

  Stats: 10 lines in 1 file changed: 0 ins; 6 del; 4 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/68.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/68/head:pull/68

PR: https://git.openjdk.java.net/panama-vector/pull/68