Merge branch 'maint' into python-work * maint: docs: avoid a footnote, some related rewordings and improvements Revert "docs: parallel-tests is not experimental anymore" docs: minor cosmetic fixes help: improve text about automatically-distributed files refactor: split 'usage' subroutine in automake tests: fix bug in 'autodist.test' maintcheck: extend 'sc_tests_plain_*' checks maintcheck: avoid few spurious failures check: don't use multi-line coloring for the report ansi2knr: deprecate, it will go away in the next major release docs: primary/prefix combination "pkglib_PROGRAMS" is now invalid docs: replace obsolete @vindex entry with a useful one docs: AM_DISTCHECK_CONFIGURE_FLAGS is for corner cases parallel-tests: stricter checks on DISABLE_HARD_ERRORS support docs: parallel-tests is not experimental anymore check: document and test $(TEST_SUITE_LOG) overriding