[jdk17u-dev] RFR: 8278796: Incorrect behavior of FloatVector.withLane on X86

[Martin Doerr]

Clean backport of [JDK-8278796](https://bugs.openjdk.java.net/browse/JDK-8278796)

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Commit messages:
 - Backport 8494fec665bfa51d1702827bd0aa4f4547e67729

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/196/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=196&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8278796
  Stats: 283 lines in 34 files changed: 94 ins; 0 del; 189 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/196.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/196/head:pull/196

PR: https://git.openjdk.java.net/jdk17u-dev/pull/196