BF: fix filter on apache-auth. Closes #286
ENH: add mod_authz_core failures to apache-auth
ENH: apache-auth filter - client wrong auth
ENH: apache-auth filter added mod_auth_digest message
ENH: ChangeLog notes for apache-auth enhancements
ENH/DOC: more realm mismatch errors. Documented filter design criteria
TST: remove dup test log entry
TST: testcases and logs for apache-auth basic
ENH/TST: filter, testcase and log entry for apache-auth authorization scheme mod_authz_owner
TST: apache-auth client denied by server configuration
ENH: apache-auth - quite a lot of authorization failure messages depending on module. Make a wildcard
TST: apache-auth digest logs
ENH: could not find a way to trigger filter ^%(_apache_error_client)s authorization failure \(no authenticated user\): \S*\s*$
DOC/TST: fix configuration path for apache-auth test cases
ENH: filter enhancements (with test cases) for apache-auth (httpd-2.4.4)
ENH: Improve postfix regex and add more samples
ENH: Improve couriersmtp and add sample logs
ENH: Improve cyrus-imap regex and add sample log file
ENH: Improve courierlogin regex and add sample logs
ENH: Improve wuftpd failregex, drop duplicate pam regex and add sample

For wu-ftpd configured to use pam, the pam filter used be used, as regex
is more robust.