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

[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.

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Commit messages:
 - 8337143: (fc, fs) Move filesystem-related native objects from libnio to libjava

Changes: https://git.openjdk.org/jdk/pull/20317/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20317&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337143
  Stats: 1265 lines in 75 files changed: 631 ins; 523 del; 111 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