Merge mysql.com:/home/bar/mysql-work/mysql-5.0-rpl

into  mysql.com:/home/bar/mysql-work/mysql-5.1-new-rpl


mysql-test/t/ctype_uca.test:
  Auto merged
sql/mysqld.cc:
  Auto merged
mysql-test/t/subselect.test:
  After merge fix

sql/mysqld.cc

@@ -2923,7 +2923,6 @@ static int init_common_variables(const char *conf_file_name, int argc,
   global_system_variables.collation_connection=  default_charset_info;
   global_system_variables.character_set_results= default_charset_info;
   global_system_variables.character_set_client= default_charset_info;
-  global_system_variables.collation_connection= default_charset_info;
 
   if (!(character_set_filesystem= 
         get_charset_by_csname(character_set_filesystem_name,