Update print/cups-filters to cups-filters-1.12.0

Changes:
CHANGES IN V1.12.0
- cups-browsed: Added new "CreateRemoteCUPSPrinterQueues"
  directive to cups-browsed.conf, which allows to decide
  whether to auto-create local print queues for shared CUPS
  queues on remote machines. This way one can also set up
  servers which only create queues for IPP network printers.
- driverless: Added new /usr/lib/cups/driver/driverless
  utility to make CUPS auto-generate PPD files for printers
  designed for driverless use (IPP Everywhere, Apple Raster)
  when they are set up with a printer setup tool. This gives
  transparency to set up these printers with legacy printer
  setup tools. This utility is also linked to /ustr/bin to
  manually generate PPDs via command line.
- libcupsfilters, cups-browsed: Moved the PPD generator for
  IPP network printers from cups-browsed to libcupsfilters, so
  that it can also be used by other utilities.
- cups-browsed: When auto-generating a PPD set the cost values
  in the filter lines to give the highest priority to PDF,
  then PWG Raster, Apple Raster, PCL-XL, PostScript, PCL 5c/e.
- cups-browsed: Synced the PPD generator with the one of CUPS,
  giving the best possible support for IPP Everywhere and
  AirPrint printers. Especially support for more media types
  and for finishing units got added. Also support for more
  different ways to represent the printer capabilities via
  IPP attributes got added.
- cups-browsed: Added support for auto setup of IPP printers
  understanding the Apple Raster input data format (.urf, on
  AirPrint printers), only if CUPS 2.2.2 is used, which can
  generate this format via its rastertopwg filter.
- cups-browsed: Added new "NewIPPPrinterQueuesShared"
  directive to cups-browsed.conf, which allows to decide
  whether the auto-created local print queue for a newly
  discovered IPP network printer will be shared or not. For
  printers discovered earlier, cups-browsed remembers the
  previous setting.
- cups-browsed: If a user changes the printer-is-shared bit of
  an auto-created print queue for an IPP network printer (not
  for a remote CUPS queue), record this fact and recover the
  change when creating this queue in the next session.
- cups-browsed: For automatic creation of print queues for IPP
  network printers also allow only creating queues for IPP
  Everywhere printers, only for Apple Raster printers, or for
  both printer types designed for driverless printing and not
  only for all suitable printers, configurable via the
  CreateIPPPrinterQueues directive in cups-browsed.conf.

(leot)