Merge whalegate.ndb.mysql.com:/home/tomas/mysql-5.1-opt

into  whalegate.ndb.mysql.com:/home/tomas/mysql-5.1-single-user


sql/field.cc:
  Auto merged
sql/field.h:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/sql_table.cc:
  Auto merged
sql/handler.cc:
  manual merge
sql/mysqld.cc:
  manual merge
sql/set_var.cc:
  manual merge
sql/sql_plugin.cc:
  manual merge

sql/sql_plugin.cc

@@ -1740,6 +1740,7 @@ bool plugin_foreach_with_mask(THD *thd, plugin_foreach_func *func,
       pthread_mutex_unlock(&LOCK_plugin);
     }
     plugin= plugins[idx];
+    /* It will stop iterating on first engine error when "func" returns TRUE */
     if (plugin && func(thd, plugin_int_to_ref(plugin), arg))
         goto err;
   }