Merge pull request #3159 from petterreinholdtsen/2.9-upstream-ax-python

Fetched latest ax_python.m4 and ax_python_devel.m4 from upstream.

Author: petterreinholdtsen

src/m4/ax_python.m4

@@ -50,12 +50,12 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
-#serial 18
+#serial 20
 
 AC_DEFUN([AX_PYTHON],
 [AC_MSG_CHECKING(for python build information)
 AC_MSG_RESULT([])
-for python in python3.11 python3.10 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python; do
+for python in python3.12 python3.11 python3.10 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3.1 python3.0 python2.7 python2.6 python2.5 python2.4 python2.3 python2.2 python2.1 python; do
 AC_CHECK_PROGS(PYTHON_BIN, [$python])
 ax_python_bin=$PYTHON_BIN
 if test x$ax_python_bin != x; then