Revision 378560

XMP metadata generation from the PDFInfo object now conforms to PDF/A-1 (6.7.3 in ISO 19005-1:2005(E)).
On PDFDocument, it is now possible to set the PDF-A mode which triggers conformance checks where necessary.
The first PDF/A-1b conformance checks are now in the code. When conformance problems are detected, the new PDFConformanceException (subclass of RuntimeException since this would be a programmer error) is thrown.
PDF Renderer got a setting (through rendering options and XML configuration) to set the PDF/A-1 mode. Default is "disabled".