Fix for OPENAM-2714, review CR-2107. Update agentadmin script to escape variables to avoid being replaced incorrectly during maven build process.

Initial commit of OpenAM JEE Policy Agents using maven to build. Fix for AME-2042, review by Peter and Travis.

First cut of a Maven based build for OpenAM JavaEE policy agents. Includes example of building Tomcat v6 policy agent distribution.