tlbBuilder: play around with test-headers

- plain PODs like "double A[10]" are not supported? -> arrays.h
- the xml-printer seems to do superfluous spaces... -> classes.tlb

Signed-off-by: Martin Zenzes <martin.zenzes@dfki.de>
tlbBuilder: CMakeLists: place generated tlb-files directly in test-header-dir

what about adding "opaques" to the test-data?

Signed-off-by: Martin Zenzes <martin.zenzes@dfki.de>