Merge branch 'ad-parallel-tests' into next * ad-parallel-tests: parallel-tests: New target recheck-html. parallel-tests: redo lazy checking: recheck and RECHECK_LOGS. parallel-tests: do not mark check-TESTS as `.MAKE'. parallel-tests: warn about $(srcdir), $(top_srcdir) in TESTS. check-html: Always create HTML output, note conversion failure. parallel-tests: per-extension test driver: <EXT>_LOG_COMPILER. parallel-tests: also record logs of SKIPped tests. Minor optimization in parallel-tests text box creation.