RFR: 8337143: (fc, fs) Move filesystem-related native objects from libnio to libjava [v16]

[Brian Burkhalter]

> This proposed change would move the native objects required for NIO file interaction from the libnio native library to the libjava native library on Linux, macOS, and Windows.

Brian Burkhalter has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 16 commits:

 - Merge
 - Merge
 - Merge
 - Merge
 - Merge
 - Merge
 - Merge
 - Merge
 - 8337143: Minor makefile tweak
 - 8337143: Clean up to address reviewer comments
 - ... and 6 more: https://git.openjdk.org/jdk/compare/fe9dbcc4...498be60b

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Changes: https://git.openjdk.org/jdk/pull/20317/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20317&range=15
  Stats: 1539 lines in 92 files changed: 774 ins; 668 del; 97 mod
  Patch: https://git.openjdk.org/jdk/pull/20317.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20317/head:pull/20317

PR: https://git.openjdk.org/jdk/pull/20317