[jdk17] RFR: 8268293: VectorAPI cast operation on mask and shuffle is broken

[Jatin Bhateja]

Existing implementation of VectoMask.cast and VectorShuffle.cast operation do not generate correct mask compliant with the species passed as the argument.

This patch fixes the implementation and adds the corresponding cast operation test cases to VectorAPI regression suite.

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Commit messages:
 - 8268293: VectorAPI cast operation on mask and shuffle is broken

Changes: https://git.openjdk.java.net/jdk17/pull/39/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=39&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268293
  Stats: 4003 lines in 64 files changed: 2751 ins; 818 del; 434 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/39.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/39/head:pull/39

PR: https://git.openjdk.java.net/jdk17/pull/39