Enhance `java.math.BigInteger` constructors taking a `byte[]` argument by improving guarantees of internal invariants.
------------- Commit messages: - Added @bug to test. - Refactored test to JUnit. - 8319174: Enhance robustness of some j.m.BigInteger constructors - Merge branch 'master' - Merge branch 'master' into bigint - Enhance BigInteger constructors taking byte[] Changes: https://git.openjdk.org/jdk/pull/16449/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16449&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8319174 Stats: 327 lines in 3 files changed: 255 ins; 18 del; 54 mod Patch: https://git.openjdk.org/jdk/pull/16449.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/16449/head:pull/16449 PR: https://git.openjdk.org/jdk/pull/16449
