Use new cups-pk-helper's method PrinterAddOption for setting
default media size for new printers. This fixes problem with
setting default media size (#672694).
Show correct hostname for each remote printer. G-c-c gets
it from printer-uri-supported or from device-uri CUPS options now.
It also set 'printer-network' icon for remote printers to have them
easily recognizable from local printers.
If a or b are NULL then (c && d) fails, and both a_normalized
and b_normalized are left uninitialised, possibly causing a crash
when we try to free them later.
If available, use DBus method GetBestDriver which determines the best PPD file
for the given printer. This method is available in system-config-printer
since version 1.3.5 (#654742).
Clean "~/.cups/lpoptions" file before setting default printer
on local CUPS server. Store default printer to "~/.cups/lpoptions"
if we are connected to a remote CUPS server (#646100).
This patch makes Printers panel to automatically refresh printers list
when a new printer is added or removed. It is refreshed also when a printer
changes its state (to see changes in paused/unpaused state) (rhbz#691718).
It also automatically refresh list of jobs (and also number of active jobs in
main tab) for actual printer (rhbz#691737).
The dialog is able to add printers discovered by cupsGetDevices().
It can also add printers from a remote CUPS server by typing
its address and selecting printer we want to add (#640734).
