Updated cups-filters to 1.11.3.

CHANGES IN V1.11.3

	- cups-browsed: If a queue is not only discovered via Bonjour
	  but also via legacy CUPS or LDAP, prefer the Bonjour record
	  as it provides more information and there is also a defined
	  cancellation broadcast.
	- cups-browsed: Let PPD options saved in the last session also
	  get applied to generated PPDs for IPP network printers.
	- cups-browsed: Make sure that saved PPD options do not get
	  lost if for some reason the PPD file cannot be loaded in a
	  new cups-browsed session (or the loaded PPD file is
	  different).  This is done by holding a copy of the settings
	  in the remote printer data structure.
	- cups-browsed: When saving option settings, remove
	  backslashes added when the settings are read out via IPP
	  request. Otherwise the backslashes would double with each
	  session of cups-browsed.
	- implicitclass: Do not let the job get immediately retried on
	  failure to send it out to the remote CUPS printer. By
	  repeating to send the job to an unavailable server so
	  quickly, cups-browsed gets bombed with requests and hangs on
	  shutdown.
	- cups-browsed: Shortened timeouts of HTTP connections and IPP
	  requests to 3 seconds amd of IPP requests to remote CUPS
	  servers to 2 seconds. For local IPP requests always use the
	  connection once created via http_connect_local(). Also call
	  g_main_context_wakeup(NULL) after each
	  g_main_loop_quit(gmainloop) call. These measures should
	  reduce long hangs of cups-browsed on shutdown when a CUPS
	  server got unavailable.
	- cups-browsed: Do not mark remote printers discovered via
	  legacy CUPS broadcasts as disappeared right from the
	  beginning to implement the browse timeout. Instead manage
	  their expiring by introducing a flag which marks them as
	  CUPS legacy printers. Printers with disappeared status are
	  considered invalid in some situations, especially when
	  clusterin equally-named remote printers (Bug #1374).
	- cups-browsed: When we have remote CUPS printers, we use the
	  implicitclass backend and a local copy of the remote PPD
	  file already if we have only a single remote printer with
	  this queue name. This simplifies the management of remote
	  CUPS printers and also we do not hassle with using a remote
	  PPD file. Now one can change PPD option defaults with
	  printer setup tools or the lpadmin command and they get
	  preserved in the next cups-browsed sessions.
	- if we are using the implicitclass backend CUPS does not make
	  the server's PPD file available on the client any more. To
	  fix this, we download the PPD file when creating an
	  implictclass:... queue and apply it to the queue. This way
	  the options of the printer(s) are always available for
	  enumeration, especially in print dialogs (Bug #1372). We
	  modify the local copy setting any options saved from the
	  previous session and inhibiting local execution of filters
	  (as the driver for the remote printer is not necessarily
	  available locally).
	- cups-browsed: Added flag to inhibit auto-backup of option
	  settings by the on_printer_modified() notification handler
	  during print queue setup and removal.
	- cups-browsed: Let the printer_record() function always
	  return the master record for the printer name and not an
	  arbitrary duplicate.
	- cups-browsed: Fixes in the functionality for saving option
	  settings: Make sure to not save the same option twice with
	  different values, do not save the "printer-is-shared" option
	  (errors out when re-applying option in the next session).
	- cups-browsed: Treat discovered printers correctly also if
	  they use a non-standard port, even if several CUPS daemons
	  are running on the same server but on different ports. This
	  also improves the support of a sandboxed printing stack.
	- cups-browsed: Close http connections opened for polling
	  properties of IPP network printers, to fix a possible memory
	  leak.
	- cups-browsed: Cleaned up HTTP access to local and remote
	  CUPS servers and IPP printers, to assure that the local CUPS
	  daemon is always accessed the same (user-defined) way
	  (domain socket/localhost:port). This especially prevents
	  cups-browwsed hanging on shutdown (Debian bug #832637).
	- cups-browsed: Fixed clustering equally-named queues of
	  different remote servers, to assure to have one master
	  referencing to all duplicates and not a daisy chain of
	  duplicate references.


(wiz)