RFR: 8191963: Path.equals() and File.equals() return true for two different files on Windows [v2]

[Brian Burkhalter]

> Replace logic in `java.io.WinNTFileSystems.compare(File,File)` with that from `sun.nio.fs.WindowsPath.compareTo(Path)`.

Brian Burkhalter 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 three additional commits since the last revision:

 - 8191963: Add system property to enable legacy behavior
 - Merge
 - 8191963: Path.equals() and File.equals() return true for two different files on Windows

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25788/files
  - new: https://git.openjdk.org/jdk/pull/25788/files/cc4cef65..a63e13e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25788&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25788&range=00-01

  Stats: 344119 lines in 5510 files changed: 239196 ins; 69265 del; 35658 mod
  Patch: https://git.openjdk.org/jdk/pull/25788.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25788/head:pull/25788

PR: https://git.openjdk.org/jdk/pull/25788