Use python3 print function instead of python2 print statement

m4/pypath.m4

@@ -2,5 +2,5 @@ AC_DEFUN([adl_CHECK_PYTHON],
  [AM_PATH_PYTHON([2.0])
   AC_CACHE_CHECK([for $am_display_PYTHON includes directory],
     [adl_cv_python_inc],
-    [adl_cv_python_inc=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_inc()" 2>/dev/null`])
+    [adl_cv_python_inc=`$PYTHON -c "from distutils import sysconfig; import sys; sys.stdout.write(sysconfig.get_python_inc())" 2>/dev/null`])
   AC_SUBST([PYTHONINC], [$adl_cv_python_inc])])