Added some functions to debug hashes and arrays for test debugging, rewrote rule_tests.t to work now that test_types is not cleared (bug 6893), fixed a few regression tests that were not up to date, commented one regression test that is not working (bug 6894).

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1436729 13f79535-47bb-0310-9956-ffa450edef68