Fix LAZY_TEST_SUITE handling and $(TEST_SUITE_LOG) recreation. * lib/am/check.am (check-TESTS): Expand `$(TEST_LOGS)' only once in the rule command, for systems with low command line limits. Remove $(TEST_SUITE_LOG) even in LAZY_TEST_SUITE mode. ($(TEST_SUITE_LOG)): Always recreate $(TEST_SUITE_LOG). Mention lazy mode in the summary output. * tests/parallel-tests.test: Test LAZY_TEST_SUITE semantics. Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>