RFR: 8366899: SetupExecute should add the command line to vardeps

[Magnus Ihse Bursie]

If the command line changes, it is reason to re-run the command.

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Commit messages:
 - 8366899: SetupExecute should add the command line to vardeps

Changes: https://git.openjdk.org/jdk/pull/27348/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27348&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8366899
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/27348.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27348/head:pull/27348

PR: https://git.openjdk.org/jdk/pull/27348