rename libmpdecimal -> libmpdec

see https://www.bytereef.org/mpdecimal/doc/libmpdec/index.html

Author: skirpichev

Doc/deprecations/c-api-pending-removal-in-3.16.rst

@@ -1,4 +1,4 @@
 Pending removal in Python 3.16
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-* The bundled copy of ``libmpdecimal``.
+* The bundled copy of ``libmpdec``.

Doc/whatsnew/3.13.rst

@@ -2594,7 +2594,7 @@ Build Changes
 
 * The :file:`configure` option :option:`--with-system-libmpdec`
   now defaults to ``yes``.
-  The bundled copy of ``libmpdecimal`` will be removed in Python 3.16.
+  The bundled copy of ``libmpdec`` will be removed in Python 3.16.
 
 * Python built with :file:`configure` :option:`--with-trace-refs`
   (tracing references) is now ABI compatible with the Python release build

configure

@@ -4215,12 +4215,12 @@ AS_VAR_IF([with_system_libmpdec], [yes],
       [have_mpdec=no])
   ])],
   [AC_MSG_WARN([m4_normalize([
-     the bundled copy of libmpdecimal is scheduled for removal in Python 3.16;
+     the bundled copy of libmpdec is scheduled for removal in Python 3.16;
      consider using a system installed mpdecimal library.])])])
 
 AS_IF([test "$with_system_libmpdec" = "yes" && test "$have_mpdec" = "no"],
       [AC_MSG_WARN([m4_normalize([
-         no system libmpdecimal found; falling back to bundled libmpdecimal
+         no system libmpdec found; falling back to bundled libmpdec
          (deprecated and scheduled for removal in Python 3.16)])])
        USE_BUNDLED_LIBMPDEC()])