[jdk11u-dev] RFR: 8305072: Win32ShellFolder2.compareTo is inconsistent

[Martin Doerr]

Clean backport of [JDK-8305072](https://bugs.openjdk.org/browse/JDK-8305072).

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Commit messages:
 - Backport 2fcb816858406f33cefef3164b2c85f9f996c7da

Changes: https://git.openjdk.org/jdk11u-dev/pull/2764/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2764&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305072
  Stats: 160 lines in 2 files changed: 158 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2764.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2764/head:pull/2764

PR: https://git.openjdk.org/jdk11u-dev/pull/2764