Log Message:
jbig2enc: updated to 0.30

0.30: (2024-12-24)
* Reject odd input depths that pixThresholdToBinary doesn't support.
* Fix build with Leptonica >=1.83
* Replace vs2008 solution with CMake
* Fix `Error heap-use-after-free`
* Fix typos in code
* Support python 3, drop support for python2
* Rename pdf.py to jbig2topdf.py
* Add a A switch to set dpi for images w/o dpi information
* Add support for standalone .jb2
* Suppress a chatty informational message unless requested
* Neat symbolic threshold 0.92
* Fix Endian issue on ARM
* Neat symbolic threshold 0.92
* Make the weight parameter adjustable
* Add lobal BW threshold on 8 bpp images
* Replace obsolete macro `AC_PROG_LIBTOOL'