Fix CVE-2009-3548. When installed via the Windows installer and

      using defaults, don't create an administrative user with a blank
password. Additionally, the administrative user is only created if the
manager or host-manager web applications are selected for installation.


git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc5.5.x/trunk@919006 13f79535-47bb-0310-9956-ffa450edef68