PIG-3653: Add support for pre-deployed jars (commit missing test)

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1559020 13f79535-47bb-0310-9956-ffa450edef68
PIG-3573: Provide StoreFunc and LoadFunc for Accumulo

git-svn-id: https://svn.apache.org/repos/asf/pig/trunk@1559022 13f79535-47bb-0310-9956-ffa450edef68