* Register more data type for reshape operator.

* Enable the SSD loss to support normalization by the total number of output locations.

* Fix the doc format.

* merge fluid dist tests

* update cmake

* Fix dist demo error

* revert trainer_id

* Enhance bipartite_match_op to support argmax matching after bipartite matching.

* Fix typo error.

Fix #8079 and remove the redundant code

* Generated functions can take `*args` as inputs.

* Also follow comments, change prefix to key

* Add reset and guard to unique_name

* framework.py enhancement

* polish

* clean up

* enforce the inputs of Operator __init__ of type Variable

* python2 assert

* reverse assert

* Add block.fwd_block_id

* fix bug in memory optimization transpiler

* Change DFS to BFS

* Add comments

the label file in the conll05 dataset has a wrong order