DERBY-6380; Rolling log files do not get copied in failed directory when a junit test fails
   removing two 'fail' commands left over from debugging, and streamlining clean up in ErrorStreamTest


git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/trunk@1545957 13f79535-47bb-0310-9956-ffa450edef68