* lib/am/dejagnu.am (site.exp): Don't define tool in site.exp, because we set that by invoking runtest with --tool. * tests/Makefile.am (TESTS): Add dejagnu4.test, dejagnu5.test, dejagnu6.test, dejagnu7.test. * tests/dejagnu4.test: New test. * tests/dejagnu5.test: New test. * tests/dejagnu6.test: New test. * tests/dejagnu7.test: New test. * tests/dejagnu3.test: Make sure the DejaGnu test is actually run.