refactored ValueDbTest
added handling of Blob[] (blob arrays) to DefinedFunctionsCreator
style cleanup
renamed STypes.allowedForArrayElem() -> basicTypes()
added STypes.arrayTypes()
added STypes.ANY, added SArrayType.elemType()
added STypes.arrayTypeContaining()
refactored DefinedFunctionsCreator
refactored out ArtifactSaver from ArtifactBuilder
refactored StringSaver out of ArtifactSaver
refactored FileSaver out of ArtifactSaver
refactored StoringArtifactSmoothTest
refactored StringArraySaver out of ArtifactSaver
refactored FileArraySaver out of ArtifactSaver
refactoring in .task.exec.save.*
refactored out BlobSaver from FileSaver