Log Message:
cups-filters: Update to 1.26.1

Changes:
1.26.1
------
 - build system: Install the "implicitclass" backend with
   "-rwx------" permissions, so that CUPS executes it as root,
   as the "ipp" CUPS backend also has to be executed as root
   (Issue #183).
 - build system: Fixed setting permissions when installing the
   "cups-brf" backend.
 - libcupsfilters: When using the
   "media-{bottom,left,right,top}-margin-supported" IPP
   attributes (needed if we have no "media-col-database"), use
   the minimum and not the maximum margins, this allows
   accessing more of the printer's capabilities, especially for
   legacy printers which do not provide sufficient information
   (Issue #22).

1.26.0
------
 - cups-browsed: When generating local queues for printers for
   which the local CUPS daemon would provide temporary queues
   use the PPDs generated by libcupsfilters and not the ones
   generated by CUPS. The PPD generation of libcupsfilters also
   works with IPP-1.x-only printers, printers which do not
   support to query "media-col-database" and printers which
   support driverless printing only via PCLm. This can be
   changed via the "UseCUPSGeneratedPPDs" directive in
   cups-browsed.conf (Issue #22).
 - libcupsfilters: Re-structured the get_printer_attributes()
   function to remove the recursive calls for the fallbacks, to
   check required attributes in the response only if requested,
   and to fully integrate the method of getting a suitable
   response for a full printer capability list also if the
   printer is only IPP 1.1 or does not support the
   "media-col-database" attribute (Issue #22, Issue #163).
 - libcupsfilters, cups-browsed, driverless: Moved the funtions
   get_printer_attributes() and resolve_uri() from cups-browsed
   into libcupsfilters, to share them with the driverless
   utility (Issue #22).
 - implicitclass: Fixed wrong stdout redirection from the
   filters to the IPP backend and hard-coded path for "ipp"
   backend call (Possible fix for Issue #163, Issue #181).
 - cups-browsed, driverless: Use DNS-SD-service-name-based URIs
   instead of host-name-based ones, as CUPS also does. In
   cups-browsed one can switch back to the conventional
   host-name-based URIs via the new "DNSSDBasedDeviceURIs"
   configuration option.  Note that cups-browsed always uses
   conventional URIs for printers discovered via legacy CUPS
   browsing or LDAP.
 - cups-browsed: When removing a CUPS queue, do not consider an
   error (and retry) if the queue does not actually exist. Also
   ignore errors when checking whether there are still
   jobs. This way when a new queue gets created and the
   generation of the PPD file fails the attempt to remove this
   non-existing queueu when removing the printer entry does not
   cause any problem.
 - cups-browsed: Improved the fallback mechanism of the
   get_printer_attributes() function. Instead of considering
   the request failed by the content of the response only when
   not more than the two language atrributes come out, we check
   through a list of required attributes whether they are all
   there.  In addition, we actually fail when all callbacks
   have failed (Issue #22).
 - cups-browsed: Introduced new configuration options
   "UpdateCUPSQueuesMaxPerCall" and
   "PauseBetweenCUPSQueueUpdates" to limit the amount of local
   CUPS queues created, modified, or removed in a single event
   callback. Before, when there were thousands of printers in
   the network, cups-browsed got blocked for other tasks, like
   assigning a destination printer for a cluster print job
   (Issue #163).

1.25.13
-------
 - implicitclass: When passing on the job via the "ipp" CUPS
   backend, set argv[0] to the destination printer URI (Pull
   request #173).
 - cups-browsed: Added another fallback to the
   get-printer-attributes IPP request: Now after failing the
   standard request ("all", "media-col-database") with both IPP
   2.0 and IPP 1.1, try simply "all", without
   "media-col-database" (Pull request #173).
 - cups-browsed: Do not set printer-is-shared for remote CUPS
   queue when making a temporary queue permanent (Pull request
   #180).
 - cups-browsed: Fix leaks of ipp_t struct and load balancing
   on the servers (Pull request #179).
 - cups-browsed, implicitclass: Prioritize Apple Raster against
   PWG Raster when selecting the PDL for the destination
   printer for a job sent to a cluster, also cleaned up the PDL
   selector code and added PostScript support.
 - libcupsfilters: Updated the PPD generator adding all changes
   of the PPD generator of CUPS: Support for "job-account-id",
   "job-accounting-user-id", "job-password", finishing options
   "trim-..." added, finishing options and
   "finishing-col-database" support synced with CUPS.
 - libcupsfilters: In the PPD generator get the mode for
   handling the back sides of the sheets when printing duplex
   preferrably from the "urf-supported" attribute.
 - libcupsfilters: Fixed bug that the PPD generator did not
   output the "*CloseUI: *ColorModel" line when it did not
   determine a default setting for "ColorModel".
 - cups-browsed: Added some missing memory allocations leading
   to a segfault (Issue #175).

1.25.12
-------
 - libcupsfilters: Use the text names "Draft", "Normal", and
   "High" instead of 3, 4, and 5 as choice names for the
   "cupsPrintQuality" option as CUPS does (Issue #171).
 - libcupsfilters: If a printer supports both Apple Raster and
   PWG Raster let the generated PPD use Apple Raster as there
   are several printers which report PWG Raster support but do
   not actually print PWG Raster (Pull reguest #168, Issue
   #171, CUPS issue #5238).
 - cups-browsed: Fix unset location check to use DNS-SD field
   (Pull request #172).
 - libcupsfilters, beh, implicitclass, foomatic-rip,
   imagetopdf, mupdftoraster, pdftops, sys5ippprinter,
   cups-browsed, driverless: Silenced all compiler warnings to
   make the build process of cups-filters completely free of
   warnings.
 - pdftops: Fixed crash when using filter without PPD file.
 - pdftops: If printing grayscale jobs with Ghostscript as PDF
   renderer, add "-sProcessColorModel=DeviceGray" to
   Ghostscript command line.
 - pdftops: Do not use the ugly "pdftops -level1 ..."
   workaround to get grayscale PostScript output from
   Poppler. It leads to huge output files with Poppler's
   "pdftops" utility and does not work at all with
   "pdftocairo".  Poppler itself does not support PostScript
   output converted to grayscale. Issue a warning with the hint
   to use Ghostscript or MuPDF as PDF renderer (Issue #169).
 - libcupsfilters: In the cupsRasterParseIPPOptions()
   accept also "Mono", "Monochrome", and "Gray" as \ 
color
   space names.