RFR: 8332872: SetupExecute should cd to temp directory

Fri Sep 5 15:42:26 UTC 2025

Some commands create junk files all around in the current directory. We should change directory to a special working dir (typically the support dir) in SetupExecute, before running any command.

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Commit messages:
 - Merge branch 'master' into execute-in-work-dir
 - Jmod workaround did not help; try this instead
 - Remove debug code
 - Separate support dir for each jmod
 - 8332872: SetupExecute should cd to temp directory

Changes: https://git.openjdk.org/jdk/pull/27103/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27103&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332872
  Stats: 101 lines in 5 files changed: 86 ins; 0 del; 15 mod
  Patch: https://git.openjdk.org/jdk/pull/27103.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27103/head:pull/27103

PR: https://git.openjdk.org/jdk/pull/27103