[jdk25u] RFR: 8369184: SimpleTimeZone equals() Returns True for Unequal Instances with Different hashCode Values

[Kieran Farrell]

Clean backport

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

Commit messages:
 - bp

Changes: https://git.openjdk.org/jdk25u/pull/297/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=297&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8369184
  Stats: 102 lines in 2 files changed: 94 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk25u/pull/297.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/297/head:pull/297

PR: https://git.openjdk.org/jdk25u/pull/297