initialize locale

This has two effects:

* The locale may have impact on string formatting. So depending on the
  locale we may end up with different decimal point.
* We can use nl_langinfo() for UTF-8 detection.

CRT.c

@@ -585,6 +585,9 @@ void CRT_init(int delay, int colorScheme) {
       CRT_colorScheme = 1;
    CRT_setColors(CRT_colorScheme);
 
+   /* initialize locale */
+   setlocale(LC_ALL, "");
+
 #ifdef HAVE_LIBNCURSESW
    char *locale = setlocale(LC_ALL, NULL);
    if (locale == NULL || locale[0] == '\0')