UIMA-4069 Redesign of JD toward the main goal of classpath separation for container (system) code.

ProxyJobDriverErrorHandler and ProxyJobDriverCollectionReader with test cases.  IJdUserErrorHandler change CAS to String type.

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1637572 13f79535-47bb-0310-9956-ffa450edef68