* add ctrl edge between copyHd and MdUpdte

* fix bug of add ctrl regst

* hack ctrl regst max regst num

* test undo

* after experiment

* use get task type instead of dynamic cast

* fix for review

* remove hack regst

* init ctrl regst min num

* fix ctrl regst num between copy and mdupdt after improver

* mdupdt actor return ctrl regst k(k = num of piece in batch) one act

* add returned regst num of ctrl regst

* CHECK invariant


Former-commit-id: 339d56ee