preflight mass tests

[Tilman Hausherr]

I've run preflight on my test files, with the thought that there should 
not be any NPE. It is not looking good, there is at least one NPEs issue 
coming.

And when that is done, one might check the "Bavaria tests"
http://www.pdflib.com/knowledge-base/pdfa/validation-report/
The segment "Evolution of PDF/A validation" is sortof hilarious: due to 
the evolution of the PDF/A spec, documents created earlier were no 
longer consider valid.

And there's a familiar name mentioned on the page :-)

Tilman