Fix https://bz.apache.org/bugzilla/show_bug.cgi?id=57708

      Implement a new feature for AJP connectors - Tomcat Authorization
If configured (it is disabled by default) Tomcat will take an authenticated user name from the AJP protocol and use the appropriate Realm for the request to authorize (i.e. add roles) to that user.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1667546 13f79535-47bb-0310-9956-ffa450edef68