Log Message:
sane-backends: Update to 1.2.1

Changelog:
## New with 1.2.1 (released 2023-02-05)

### Backends

- `avision`:
    - Minor fix for protocol packet length.
    - Added “basic” support for Avision AD345F. Note that multi-sheet \ 
scanning is problematic.
    - Fix for 32-bit limitation on scan line size which caused early abort of scan.
    - Fix for minimum resolution for devices with AV_ASIC_C6.
    - Various small logic errors addressed.

- `canon`: Use the common model name instead of string from the device.
- `canon_lide70`: Some small corrections to option support.
- `canon_pp`: Potential buffer overrun issue addressed.
- `canon-dr`: Added support for lifecycle counters for dr-x10c scanners.
- `epjitsu`: Hang fix for Scansnap S1300i.
- `epsonds`: Added support for Epson XP-2200 Series devices.
- `escl`:
    - Fixes related to support for HP M277dw.
    - Fix for Canon TS-3400 series resolution support.
    - Added support for Epson EcoTank L3160.
    - Fix for segfault crash.
    - Performance and memory use enhancements through the use of memory-mapped I/O.
    - Fix for TIFF file type generation failure.
    - IPv6 detection improvements.
- `fujitsu`:
    - Contrast/brightness fixes for Fujitsu ix500.
    - Support confirmed for Fujitsu fi-7300NX.
    - Support added for ScanSnap ix1400.
    - Added support for ScanPartner SP30.
- `genesys`:
    - Fixes for unit test build errors related to GCC 12.
    - Fix for 32-bit limitation on scan line size which caused early abort. of scan.
    - Build issue fix for OSX.
    - Button support for Canon 8400f scanner corrected.
    - Support added back in for Plustek OpticFilm 7600i: config file entry was \ 
missing.
- `kvs40xx`: Compiler warnings fixed.
- `mustek_usb2`: Compiler warnings fixed.
- `pixma`:
    - Fix for Canon TS-3400 series resolution support.
    - Button support for Canon MG5700 series corrected.
    - Added support for Canon imageRUNNER 1018/1022/1023.
    - Added support for Canon PIXMA TS2400 Series.
    - Added support for Canon PIXMA TS2600 Series.
    - Testing confirmed for Canon TS6400 series devices.
    - Testing confirmed for Canon TS3400 series devices.
    - Various devices’ max resolutions fixed.
    - Minor fix for broadcast buffer size error.
- `plustek_pp`: Support removed for deprecated Linux kernel driver build.
- `test`: Fix for 32-bit limitation on scan line size which caused early abort \ 
of scan.
- `xerox_mfp`:
    - JPEG support fix for Samsung SCX-4828 FN and similar.
    - JPEG support fix for Samsung SCX-4824 FN and similar.

### Frontends

- `sane-find-scanner`: Alteration to output to indicate that indicated devices \ 
are potentially scanners.
- `saned`: Fix for poll.h header file, which caused problems on Alpine Linux.
- `scanimage`:
    - Attempts to set readonly options will give a warning about readonly option \ 
set attempt now, instead of the misleading "unknown option" error.
    - Header file build fixes for FreeBSD.
    - Fix for backends presenting NULL attributes in deactivated options.

### Miscellaneous

- Updated translation to Russian, Italian, British English and Ukraine.
- Compiler warnings addressed for a number of backends.
- A number of fixes for the build system:
   - Fix to ignore LDFLAGS environment variable in build.
   - Fix to not build umax_pp tool when disabled.
   - Fix for CLANG compiler warnings.
   - Various small improvements to dependency checking and CI builds.
   - General corrections for backends’ use of mkstemp() function.
   - Added support for autotools’ silent build option.
   - Remove –with-group configure option, since it is no longer used.
   - Autotools fixes for backend library installation.

## New with 1.1.1 (released 2022-01-18)

### Backends

- `epson2`: Fixed support for many scanners that don't support focus command.
- `epson2`: Improve reliability of long scans.
- `epsonds`: Implemented support for the following Epson scanners:
   - DS-1610
   - DS-1630
   - DS-1660W
   - DS-310
   - DS-320
   - DS-360W
   - DS-410
   - DS-530
   - DS-530II
   - DS-531
   - DS-535
   - DS-535H
   - DS-535II
   - DS-570W
   - DS-570WII
   - DS-571W
   - DS-575W
   - DS-575WII
   - DS-70
   - DS-80W
   - ES-200
   - ES-300W
   - ES-300WR
   - ES-400
   - ES-400II
   - ES-50
   - ES-500W
   - ES-500WII
   - ES-500WR
   - ES-55R
   - ES-580W
   - ES-60W
   - ES-60WB
   - ES-60WW
   - ES-65WR
   - ET-2700 Series
   - ET-2710 Series
   - ET-2810 Series
   - ET-M2140 Series
   - ET-M3140 Series
   - EW-052A Series
   - FF-680W
   - L3150 Series
   - L3200 Series
   - L3210 Series
   - L3250 Series
   - L4150 Series
   - M2140 Series
   - M3140 Series
   - RR-60
   - RR-600W
   - RR-70W
   - XP-2100 Series
   - XP-2150 Series
- `epson2`: Marked XP-452 455 series as supported in documentation.
- `escl`: Fixed scanning problems on certain scanners due to incorrect URL being used
  (https://gitlab.com/sane-project/backends/-/issues/479)
- `escl`: Fixed support for different resolutions when using JPEG format.
- `escl`: Fixed handling of ipp-usb redirects to localhost which previously \ 
caused certain scanners
   to be always reported as busy.
- `escl`: Added support for Brother DCP-J772DW and Epson ET-2750 scanners.
- `escl`: Marked the following scanners as supported in documentation:
   - Canon PIXMA G4511
   - Canon PIXMA TR4550 Series
   - Canon PIXMA TR4551 Series
   - Epson ET-6100
- `escl`: Implemented support for disabling PDF output on scanners where it's broken
  (https://gitlab.com/sane-project/backends/-/issues/510)
- `escl`: Implemented support for Canon PIXME TR4520 and TR7500 scanners.
- `genesys`: Improved scan quality on Canon LiDE 35/40/50/60 by using brighter \ 
LED illumination.
- `genesys`: Fixed control of contrast and brigthness on certain scanners
  (https://gitlab.com/sane-project/backends/-/issues/271).
- `genesys`: Fixed crashes when handling slightly unexpected conditions
  (https://gitlab.com/sane-project/backends/-/issues/464).
- `genesys`: Fixed support for Plustek Opticfilm 7200 v2 scanner.
- `genesys`: Fixed button support on HP ScanJet G4010.
- `genesys`: Fixed compilation on gcc-4.8.
- `genesys`: Fixed incorrect LED exposure calculation leading to wrong color \ 
balance on certain
  resolutions on gl841 scanners
- `genesys`: Improved gray scan quality on Canon LiDE 110, 120, 210, 220
  (https://gitlab.com/sane-project/backends/-/issues/106,
  https://gitlab.com/sane-project/backends/-/issues/52).
- `genesys`: Fixed issue of motor becoming stuck at certain resolutions on Canon \ 
LiDE 50
  and possibly other gl841 scanners \ 
(https://gitlab.com/sane-project/backends/-/issues/357)
- `genesys`: Fixed periodic black lines in gray scans on Canon LiDE 80.
- `genesys`: Removed support for broken 75 and 100 dpi hardware resolutions to \ 
fix preview
  scans (https://gitlab.com/sane-project/backends/-/issues/383). These \ 
resolutions did
  not have any benefit compared to next smallest 150 dpi resolution.
- `genesys`: Add support for running in embedded environments that don't support \ 
threads.
- `genesys`: Fixed gray scans to use white color for illumination instead of red on
  Canon LiDE 35/40/50/60 and potentially other gl841 scanners. Old behavior can
  be restored via the color filter setting to select specific color component for
  the gray scan.
- `genesys`: The genesys backend is now distributed under GPL v2 or later license.
  Previously there existed an exception that allowed additional uses of the backend.
- `gt68xx`: Fixed several memory issues that can potentially lead to crashes or \ 
increased memory use.
- `hp4200`: Fixed crash when using HP ScanJet 4200C
  (https://gitlab.com/sane-project/backends/-/issues/454).
- `microtek`: Fixed support for embedded platforms using `uclibc`.
- `pieusb`: Implemented support for Reflecta RPS 10M scanner.
- `pieusb`: Fixed support for automatically advancing slides on DigitDia 4000.
- `pixma`: Fixed compliation with `NDEBUG` macro defined.
- `pixma`: Marked Canon PIXMA G4511 as supported in documentation
- `scangearmp2`: Mark GX6000, GX7000, TS5400 and MX455 series as supported.
- `sm3600-scanutil`: Fixed support for embedded platforms using `uclibc`.

### Frontends

- Improved documentation of `scanimage` concerning options provided by backends.
- `scanimage`: Improved help to specify which options are advanced.
- `scanimage`: Implemented support for PDF output format.

### Miscellaneous

- Added translation to Simplified Chinese.