UIMA-4141:
* locating resources, e.g., finding the type system of an analysis engine specified by a relative location; use constructor with url instead of inputstream & null relativepathbase

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1642960 13f79535-47bb-0310-9956-ffa450edef68