DERBY-6468; Add a version number to derbyTesting.jar
   - a new properties file, org/apache/derby/info/tsting.properties, is generated with the required info
   - this file is inserted in to derbyTesting.jar
   - sysinfo reflects the location of the org.apache.derbyTesting package if an indicative class is found in the classpath


git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1581885 13f79535-47bb-0310-9956-ffa450edef68