bpo-41369: Finish updating the vendored libmpdec to version 2.5.1 (pythonGH-24962)

Complete the update to libmpdec-2.5.1.

Co-authored-by: Stefan Krah <skrah@bytereef.org>
(removed everything but module update for Gentoo)

Author: 2 people

Modules/_decimal/_decimal.c

@@ -3279,7 +3279,7 @@ dec_format(PyObject *dec, PyObject *args)
     }
     else {
         size_t n = strlen(spec.dot);
-        if (n > 1 || (n == 1 && !isascii((uchar)spec.dot[0]))) {
+        if (n > 1 || (n == 1 && !isascii((unsigned char)spec.dot[0]))) {
             /* fix locale dependent non-ascii characters */
             dot = dotsep_as_utf8(spec.dot);
             if (dot == NULL) {
@@ -3288,7 +3288,7 @@ dec_format(PyObject *dec, PyObject *args)
             spec.dot = PyBytes_AS_STRING(dot);
         }
         n = strlen(spec.sep);
-        if (n > 1 || (n == 1 && !isascii((uchar)spec.sep[0]))) {
+        if (n > 1 || (n == 1 && !isascii((unsigned char)spec.sep[0]))) {
             /* fix locale dependent non-ascii characters */
             sep = dotsep_as_utf8(spec.sep);
             if (sep == NULL) {

setup.py

@@ -2214,7 +2214,7 @@ def detect_decimal(self):
         undef_macros = []
         if '--with-system-libmpdec' in sysconfig.get_config_var("CONFIG_ARGS"):
             include_dirs = []
-            libraries = [':libmpdec.so.2']
+            libraries = ['mpdec']
             sources = ['_decimal/_decimal.c']
             depends = ['_decimal/docstrings.h']
         else: