Cleanup during reviews

Removed some optional arguments
Fixed portability problem in federated tests


client/sql_string.cc:
  update from sql/sql_string.cc
client/sql_string.h:
  update from sql/sql_string.h
mysql-test/r/federated.result:
  Fixed error message
sql/field.cc:
  Cleanup during review
  Remove const in 'const unsigned int'
sql/field.h:
  Remove const in 'const unsigned int'
sql/ha_federated.cc:
  Better error string.  Add missing argument to error (before 'errno' was picked up from stack)
sql/handler.cc:
  Removed compiler warning
sql/item_func.cc:
  Cleanup during review
sql/item_sum.cc:
  Cleanup during review
sql/lock.cc:
  Remove optional arguments
sql/log_event.cc:
  Remove optional arguments
sql/mysql_priv.h:
  Remove optional arguments
  cahnge preapre_create_fields to use pointers instead of references
sql/opt_range.cc:
  Fix arguments so that return value is last
sql/sql_base.cc:
  Remove optional arguments
sql/sql_delete.cc:
  Remove optional arguments
sql/sql_error.cc:
  Remove optional arguments
sql/sql_help.cc:
  Remove optional arguments
sql/sql_parse.cc:
  Remove optional arguments
sql/sql_prepare.cc:
  Remove optional arguments
sql/sql_rename.cc:
  Remove optional arguments
sql/sql_select.cc:
  Remove optional arguments
sql/sql_show.cc:
  Cleanup during review
sql/sql_string.cc:
  Simple optimization
sql/sql_table.cc:
  Remove optional arguments
  Fixed indentation
sql/sql_update.cc:
  Remove optional arguments
sql/sql_yacc.yy:
  Change references to pointers

sql/sql_rename.cc

@@ -90,7 +90,7 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list)
     send_ok(thd);
   }
 
-  unlock_table_names(thd, table_list);
+  unlock_table_names(thd, table_list, (TABLE_LIST*) 0);
 
 err:
   pthread_mutex_unlock(&LOCK_open);