Move dependencies to pom, add deploy target to deploy to public repo

There's a lot of non-java stuff in here, so the Maven Ant Tasks project seemed like a non-painful way of deploying to our public repo.  I haven't used the library before, but it seems pretty nice.   Dependencies are in pom.xml, "ant resolve" pulls them into lib/, and "ant deploy" builds the jar and deploys here: 

http://repository.liveramp.com/artifactory/libs-snapshot-local/com/liveramp/jack/1.0-SNAPSHOT/