RFR: JDK-8312461 JNI warnings in SunMSCApi provider [v2]

[Mark Powers]

> https://bugs.openjdk.org/browse/JDK-8312461

Mark Powers has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - fix copyright
 - Merge
 - Merge
 - first iteration

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/15113/files
  - new: https://git.openjdk.org/jdk/pull/15113/files/50f1d16a..a5de49c7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15113&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15113&range=00-01

  Stats: 14494 lines in 728 files changed: 6144 ins; 4130 del; 4220 mod
  Patch: https://git.openjdk.org/jdk/pull/15113.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15113/head:pull/15113

PR: https://git.openjdk.org/jdk/pull/15113