To solve some really ugly coding in import.js, it would be a great if it's
possible to add a import= property to the <directory> tag.
for detecting what exactly to do for different folders there might be.
Also, this would solve the problem that if for some reason the location
changes of the directory that you'd also have to go over the import script
to change things inthere also..
The current <import-script> and <dvd-import> scripts can then become the
default when there's no import property found on the directory tag..