dataMgr:dataParser: fix that can not check big tables

1) Fix a bug that can not check big tables containing many
   sub-future tables, such as m01, m09.
2) futcom: add new function futureTalbeExists().

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
strategy:turt1: update promption

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>