RFR: 8308776: [AArch64] Math.log is 10% slower than StrictMath.log on aarch64

[Dhamoder Nalla]

This PR Introduces an optimized AArch64 intrinsic for Math.log using reciprocal refinement and a table-driven polynomial.
Improves throughput for double logarithms while preserving IEEE-754 corner case behavior (±0, subnormals, negatives, NaN).

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Commit messages:
 - [AArch64] Math.log is 10% slower than StrictMath.log on aarch64
 - [AArch64] Math.log is 10% slower than StrictMath.log on aarch64
 - [AArch64] Math.log is 10% slower than StrictMath.log on aarch64
 - [AArch64] Math.log is 10% slower than StrictMath.log on aarch64
 - [AArch64] Math.log is 10% slower than StrictMath.log on macosx-aarch64
 - [AArch64] Math.log is 10% slower than StrictMath.log on macosx-aarch64

Changes: https://git.openjdk.org/jdk/pull/28306/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28306&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308776
  Stats: 544 lines in 7 files changed: 541 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/28306.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28306/head:pull/28306

PR: https://git.openjdk.org/jdk/pull/28306