sql_string.cc:

NATIONAL CHARACTER() has latin1 charset now.
  Reasons are (by Monty):
  I think we should keepy having latin1 (default configure option)
  as the national character set.  The reason for this is simple that:

- This is ok for a large part of the world.
- It's faster and takes less space than utf8.

sql/sql_string.cc

@@ -30,7 +30,7 @@
 
 CHARSET_INFO *system_charset_info= &my_charset_utf8;
 CHARSET_INFO *files_charset_info= &my_charset_utf8;
-CHARSET_INFO *national_charset_info= &my_charset_utf8;
+CHARSET_INFO *national_charset_info= &my_charset_latin1;
 
 extern gptr sql_alloc(unsigned size);
 extern void sql_element_free(void *ptr);