RFR: 8341470: BigDecimal.stripTrailingZeros() optimization [v28]

[fabioromano1]

> An optimized algorithm for `BigDecimal.stripTrailingZeros()` that uses repeated squares trick.

fabioromano1 has updated the pull request incrementally with one additional commit since the last revision:

  Minor change

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21323/files
  - new: https://git.openjdk.org/jdk/pull/21323/files/1143fbc5..bef9f63e

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21323&range=27
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21323&range=26-27

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21323.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21323/head:pull/21323

PR: https://git.openjdk.org/jdk/pull/21323