CR-2055 Use "useCompareResultCode" option for ldif-diff and ldapcompare tools
[Opendj-777] CR-1353 Update ldapcompare testscases following fix for issue OPENDJ-777
refactoring to use different backend types
Issue 3632: known issue feature in test reports unreliable
Fix for Issue 3025: results should be the same on all OS/platforms
Move "STAF tests" (functional-tests, stress-tests and system-tests) from "/tests" directory to "/tests/staf-tests" directory.