v24.0

• AdaCoreLegacyTestDriver: fix working directory substitution.
• LineByLine: new output refiner combinator, refines each line separately.
• ClassicTestDriver: make tear_down delete the working directory by
  default.
• DiffTestDriver: fix handling of encodings to read/write baselines.
• e3-find-skipped-tests: new script to look for always skipped tests.
• e3-testsuite-report: new script to display results on the terminal.
• Enable the display of error outputs (-E/--show-error-output) by default on
  TTYs.
• AdaCoreLegacyTestDriver enhance support for generated test scripts.
• Add a lightweight report index.
• DiffTestDriver: do not run output refiners on baselines.
• Add the --show-time-info command-line option.
• Add support for the --max-consecutive-failures command-line option.
• Follow symbolic links to find testcases.
• Force the use of UTF-8 for GAIA reports.
• Fix ReplacePath to work on Windows.
• AdaCoreLegacyTestDriver: when rewriting empty baselines with
  default file (test.out), just remove the baseline file.
• driver.diff.PathSubstitute: use realpathrather thanabspath`.
• Fix CRLF handling when truncating too long logs.
• AdaCoreLegacyTestDriver: use Bash as soon as we have a Bourne shell script.
• Accept invalid regexps as testcase filters.
• Make DiffTestDriver add a DIFF failure reason (useful for advanced
  viewers).
• Switch to more common statuses in the GAIA output (--gaia-output: OK
  instead of PASSED, XFAIL instead of XFAILED, ...).
• Do not rewrite baselines for tests with expected failures.