Merge branch 'maint' * maint: (38 commits) maintcheck: fixup list of files in $(xdefs) tests: never source test-defs.sh directly, source test-lib.sh instead runtest: sanitize test environment tests: remove an obsolescent self test tests: "am_using_tap=yes" -> "am_test_protocol=tap" tests: protect test libs against multiple inclusion configure: testsuite shell can return early from "dot-sourced" files tests: move sanitization and "Bournification" in the generic test lib tests: source test defs in the generic test lib test defs: no need to re-add $srcdir/t/ax to $PATH tests: split test libs into "generic" and "automake-specific" test setup: move actual calling of testsuite setup in ./defs test setup: merge definitions of function for simple tests test init: refactor: new function 'am_test_setup' test init: refactor: move displaying of debugging info later test init: refactor: new function 'am_setup_testdir' test init: refactor: new function 'am_set_exit_traps' configure: testsuite shell set exit traps in shell functions test init: refactor: new function 'am_exit_trap' test init: refactor: new function 'process_requirements' ... Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>