[Announce] GnuPG 2.1.23 released

[Filipp Gunbin]

Hi, thanks for the release!

Compilation fails on macOS:

..
checking build system type... x86_64-apple-darwin16.6.0
checking host system type... x86_64-apple-darwin16.6.0
..
..
gcc -I/usr/local/include -I/usr/local/include -I/usr/local/include -O3 -Wall -Wcast-align -Wshadow -Wstrict-prototypes -Wformat -Wno-format-y2k -Wformat-security -W -Wno-sign-compare -Wno-missing-field-initializers -Wdeclaration-after-statement -Wlogical-op -Wvla -Wno-pointer-sign -Wpointer-arith  -g -O2   -o t-stringhelp t-stringhelp.o  libcommon.a -L/usr/local/lib -lgcrypt -lgpg-error -lassuan -L/usr/local/lib -lgpg-error -L/usr/local/lib -lgpg-error -L/usr/local/lib -lintl -liconv -lc -Wl,-framework -Wl,CoreFoundation -liconv 
ld: warning: ignoring file libcommon.a, file was built for archive which is not the architecture being linked (x86_64): libcommon.a
Undefined symbols for architecture x86_64:
  "_compare_filenames", referenced from:
      _main in t-stringhelp.o
  "_compare_version_strings", referenced from:
      _test_compare_version_strings in t-stringhelp.o
.. more similar errors..

Should I provide more info?

Filipp