* Greg pointed out that the XML produced by bs1170gain might not be correct because
certain chracters appearing in a file names need to be escaped. In order to avoid
this he proposed a CDATA section.
* Unfortunately, CDATA is not possible in attribute values. Hence this approach
could only be succsesfully introduced by moving the file name out of the attribute
and make it a full fletched entity.
* In order to make a transition as smooth as possible an optional argument was
introduced to command line argument "--xml" activating the CDATA approach:
--xml[=cdata]?