disabling hash rules correctly in 20_ac_rules_test.cf until we have a plugin, bug 7013 to change BAYES_99 back and make BAYES_999 an overlap rule, bug 7015 for untaint var bug thanks to Tomasz Potega

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1570286 13f79535-47bb-0310-9956-ffa450edef68