[jdk17u-dev] RFR: 8284437: Building from different users/workspace is not always deterministic

[Andrew Leonard]

Enable reproducible builds when the built workspace folder and or user is different between the two builds.
Should be merged with dependent fix: https://bugs.openjdk.java.net/browse/JDK-8284661

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Commit messages:
 - Backport 4451257b1432e4180a16757aafca6141b8063772

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/415/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=415&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284437
  Stats: 49 lines in 4 files changed: 47 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/415.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/415/head:pull/415

PR: https://git.openjdk.java.net/jdk17u-dev/pull/415