RFR: 7903740: JMH: Perf event validation not working with skid options [v6]

[Galder Zamarreño]

> Fixes https://bugs.openjdk.org/browse/CODETOOLS-7903740

Galder Zamarreño has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 15 additional commits since the last revision:

 - Add -q to avoid additional perf record messages
 - Pipe through perf report --stats instead
 - Merge branch 'master' into topic.validate-perf-event-without-modifier
 - Check all events with perf report in a single command
 - Remove previous approach
 - Use trim to remove any empty spaces or carriage returns
 - Do not make it quiet otherwise there's no output
 - Try perf report from specific file
 - Remove old approaches
 - Explicitly define an output file for perf record validation
 - ... and 5 more: https://git.openjdk.org/jmh/compare/c216974b...069447e1

-------------

Changes:
  - all: https://git.openjdk.org/jmh/pull/132/files
  - new: https://git.openjdk.org/jmh/pull/132/files/bed0dbb2..069447e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jmh&pr=132&range=05
 - incr: https://webrevs.openjdk.org/?repo=jmh&pr=132&range=04-05

  Stats: 8 lines in 4 files changed: 2 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jmh/pull/132.diff
  Fetch: git fetch https://git.openjdk.org/jmh.git pull/132/head:pull/132

PR: https://git.openjdk.org/jmh/pull/132