bugfix #97: improved LoggingUtils interface

...ss/tooling/kernel/ui/internal/EditPartFactoryService.java

...ooling/kernel/ui/internal/ModelElementHandlerService.java

...nel/internal/storage/eclipse/EMFTransactionalCommand.java

.../tooling/kernel/service/base/ObjectAware2ServiceBase.java

...s/tooling/kernel/service/base/ObjectAwareServiceBase.java

.../org/fortiss/tooling/kernel/util/ExtensionPointUtils.java

...unk/src/org/fortiss/tooling/kernel/util/LoggingUtils.java