Merge with global tree

BitKeeper/etc/logging_ok:
  auto-union
client/mysql.cc:
  Auto merged
client/mysqldump.c:
  Auto merged
libmysql/libmysql.c:
  Auto merged
myisam/mi_open.c:
  Auto merged
mysql-test/r/order_by.result:
  Auto merged
sql/filesort.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
mysql-test/t/order_by.test:
  Merge
sql/sql_lex.cc:
  Merge
sql/sql_yacc.yy:
  Use local copy

libmysql/libmysql.c

@@ -857,6 +857,7 @@ my_bool handle_local_infile(MYSQL *mysql, const char *net_filename)
 err:
   /* free up memory allocated with _init, usually */
   (*options->local_infile_end)(li_ptr);
+  my_free(buf, MYF(0));
   DBUG_RETURN(result);
 }