- Add the manager classes and a package renamed fileupload.

      - I think there should be basic multipart handling in the core, although maybe the manager doesn't
  belong here (so I would remove it later on).

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc6.0.x/trunk@412780 13f79535-47bb-0310-9956-ffa450edef68