[jdk17u-dev] RFR: 8317678: Fix up hashCode() for ZipFile.Source.Key [v2]

[Roland Mesde]

> Backporting JDK-8317678: Fix up hashCode() for ZipFile.Source.Key. Fixes the hashCode() implementation and adds a new benchmark test. Ran GHA Sanity Checks (passed), related zip tests (passed) and the new benchmark test  (executed properly). The merge conflict was due to the missing benchmark test file, which is in this PR.

Roland Mesde has updated the pull request incrementally with one additional commit since the last revision:

  Delete test/micro/org/openjdk/bench/java/util/zip/ZipFileOpen.java
  
  Recommended by reviewer.

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Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/4169/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/4169/files/36d69b86..e9f799ba

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4169&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=4169&range=00-01

  Stats: 110 lines in 1 file changed: 0 ins; 110 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/4169.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/4169/head:pull/4169

PR: https://git.openjdk.org/jdk17u-dev/pull/4169