Runner.java: Join strings instead of constructing File instances just to convert them to String in the end.
Runner.java: Join strings instead of constructing File instances just to convert them to String in the end.

git-svn-id: 9828a123601097aec97c9db06897c34ab9021696@832 f1b219a8-1381-427d-9730-7f2851dc2a88

akashche/disl-mirror,akashche/disl-mirror,akashche/disl-mirror,akashche/disl-mirror