Better default sorting for tiki-syslog.php -> Sometimes, two actions happen on the same minute but the order is important (ex.: LDAP error messages). Solves http://dev.tiki.org/item5398

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52360 b456876b-0849-0410-b77d-98878d47e9d5