Merge remote-tracking branch 'ansgar/description-md5' into merge

* ansgar/description-md5:
  Rename dakdb/update67.py -> dakdb/update69.py
  generate-packages-sources2: add --description-md5 option
  Include a trailing newline for the hash.
  generate-packages-sources2: Add support for Description-md5
  Add database support for Description-md5
  add TranslationFileWriter

Signed-off-by: Joerg Jaspert <joerg@debian.org>