Fixed a failing testcase:

Detailed changes:
 - expected Cost output in tests for PrintQuery

Changed PrintQuery to Print Costs in addition to results.

 - Changed Evaluator to ProfilingEvaluator
 - Added printing of cost after result
 - Fix: Actual Evaluation classes were not instantiated as expected
 - Fix: transformRenameTable did not set database.
 - Fix: PrintQuery used raw System.out for cost output

Import cleanup