Update print/cups-filters to 1.10.0

Changes:
CHANGES IN V1.10.0
- texttotext: Added new filter for text-only printers written
  in C, to use the CUPS library to access the print queue's
  PPD file, with a lot of options to fit practically all
  printer models amd paper sizes, support for CUPS' page
  management options, and support for configuring the print
  queue and controlling the options by the PPD file. The PPD
  is now generated on-the-fly by cupsfilters.drv.
- textonly: Removed the old script-based filter and its PPD
  for text-only printers.
- rastertops: Added new filter to turn PWG Raster into
  PostScript, in preparation for MuPDF support. Thanks to
  Pranjal Bhor for contributing this as part of his Google
  Summer of Code project.
- gstoraster, gstopxl, gstopdf, pstopdf: Integrated
  functionality of script-based filters pstopdf and gstopxl
  into gstoraster filter as script-based filters cannot access
  the print queue's PPD file with current CUPS due to change
  of PPD file permissions.  To make gstoraster always produce
  the correct output format (CUPS/PWG Raster, PDF, PCL-XL) it
  is called via new wrapper scripts (gstopdf, gstopxl) which
  set an environment variable telling the format. The old
  filter scripts got removed.
- imagetops, texttops: Do not use $0 in the wrapper scripts,
  when CUPS calls filters, it passes the queue name as $0, not
  path and name of the called filter.
- cups-browsed: When creating local queues for discovered IPP
  network printers always create PPD files and if the
  information supplied by the printer via IPP is insufficient
  use information from the DNS-SD entry or default values
  suitable for most printers. Use System V interface scripts
  only on explicit request in cups-browsed.conf. This change
  is to address the fact that System V interface script
  support is removed from CUPS 2.2.x and later for security
  reasons.
- pstopdf: Make the filter only get installed if Ghostscript is
  present and also moved its conversion rules into the
  cupsfilters-ghostscript.convs file.
- cups-browsed: Fixed crash when trying to get debugg logging
  both to the terminal and into a file.
- libcupsfilters: Fixed crash of pdftoraster when the color
  space is an RGB space (3 colors) with 1 bit color
  depth. Here we need to add one bit to the pixels (to get 4
  bits per pixel) to align the pixels with the bytes.
- cups-browsed: From cups-browsed.service removed the unneeded
  "Wants=cups.service" as we have "Requires=cups.service"
  (Debian bug #827455, #827457).
- foomatic-rip: Updated man page for removed page logging
  facility.
- pdftops: Also added Dell to the list of manufacturers whose
  printers need Poppler's PostScript to work around their
  PostScript interpreter bugs (Debian bug #827040).

(leot)