- Removed usage of on-disk cache
- Made new "<general>" and "<ieee1284>" tags for auto-detection info
  being recognized.

Printing System" button only appears if at least one of them is manually
installed.

- "BrowsePoll <IP>:<Port>" needs "Browsing On" in /etc/cups/cupsd.conf.
- If the same printer model is once on the parallel port and second on USB,
  there was a new USB queue created on every start of Printerdrake.
- Now CUPS is restarted whenever a new USB print queue is set up so that
  CUPS can provide the model-related USB URI.
- Made sure that the default printer is defined and that it is an existing
  queue so that during installation printerdrake does not show a line only
  containing " (Default)" in the list of installed printers.
- Cleaned up data structure after automatic queue generation.

  manufacturer-supplied PostScript PPD files
- Removed forgotten debug mode
- Disabled wizard-mode temporarily

- Fixes on error message windows in the dialog for printer sharing
  destinations.

  there is already a queue for it
- Fixed checking whether a device is known to CUPS

- Made automatic queue setup being done during installation
- Support for unknown printers in auto-detection and in automatic queue
  setup
- Fixed determination of default printer
- Fixed printer help page display
- Fixed wait message in /usr/sbin/printerdrake