[SP-249] -Backport of PDI-9598 - toggling KETTLE_EMPTY_STRING_DIFFERS_FROM_NULL variable has no effect on whether a field is recognized as empty or not empty ("Switch/Case" step) (4.8)
Merge pull request #399 from stepanovdg/SP-249

[SP-249] -Backport of PDI-9598 - toggling KETTLE_EMPTY_STRING_DIFFERS_FROM_NULL variable has no effect on whether a field is recognized as empty or not empty ("Switch/Case" step) (4.8)