RFR: CODETOOLS-7902984: jcstress: Fix lint warnings in generated code and utilities

[Aleksey Shipilev]

See bug report for details.

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Commit messages:
 - Lint failures

Changes: https://git.openjdk.java.net/jcstress/pull/87/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jcstress&pr=87&range=00
  Issue: https://bugs.openjdk.java.net/browse/CODETOOLS-7902984
  Stats: 50 lines in 13 files changed: 27 ins; 2 del; 21 mod
  Patch: https://git.openjdk.java.net/jcstress/pull/87.diff
  Fetch: git fetch https://git.openjdk.java.net/jcstress pull/87/head:pull/87

PR: https://git.openjdk.java.net/jcstress/pull/87