RFR: 8341470: BigDecimal.stripTrailingZeros() optimization [v14]

[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:

  Removed superfluous condition

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/21323/files
  - new: https://git.openjdk.org/jdk/pull/21323/files/6b184be8..62dd7659

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21323&range=13
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21323&range=12-13

  Stats: 2 lines in 1 file changed: 0 ins; 1 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