RFR: 8077587: BigInteger Roots [v65]

[fabioromano1]

> This PR implements nth root computation for BigIntegers using Newton method.

fabioromano1 has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 111 commits:

 - Merge branch 'openjdk:master' into nth-root-branch
 - Update MutableBigInteger.java
 - Useless instruction
 - Optimization for large degree values
 - Optimization for large degree's values
 - Update javadoc
 - Refine comments
 - Refine the comment
 - Comment
 - More comments
 - ... and 101 more: https://git.openjdk.org/jdk/compare/b9f7caed...dbf7b522

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Changes: https://git.openjdk.org/jdk/pull/24898/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=24898&range=64
  Stats: 481 lines in 3 files changed: 478 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/24898.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24898/head:pull/24898

PR: https://git.openjdk.org/jdk/pull/24898