Log Message:
lziprecover: update to 1.23.

2022-01-21  Antonio Diaz Diaz  <antonio@gnu.org>

	* Version 1.23 released.
	* Decompression time has been reduced by 5-12% depending on the file.
	* main_common.cc (getnum): Show option name and valid range if error.
	* dump_remove.cc (dump_members): Check tty except for --dump=tdata.
	* Option '-U, --unzcrash' now takes an argument ('1' or 'B<size>').
	* mtester.cc (duplicate_buffer): Use an external buffer.
	* repair.cc (debug_decompress): Continue decoding on CRC mismatch.
	* unzcrash.cc: Make zcmp_command a string of unlimited size.
	  Use execvp instead of popen to avoid invoking /bin/sh.
	  Print byte or block position in messages.
	* New file common.h.
	* Improve several descriptions in manual, '--help', and man page.
	* lziprecover.texi: Change GNU Texinfo category to 'Compression'.
	  (Reported by Alfred M. Szmidt).