Fix detection of cobertura, for compilation of the hook used by the
runtime container; also fixes the classpath used to define the ant
task.  Now, command-line api tests run underneath cobertura work.


git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1605216 13f79535-47bb-0310-9956-ffa450edef68