* Use for_test=True in the Fluid Trainer to clone the test program

* fix typo

* Should do the samething to the inferencer

* "init benchmark ops"

* "untrack outputs"

* "delete some usused code"

* "benchmark"

* "fix ci"

* "fix op test"

* "fix uint16 missing"

* "fix ci"

* "follow comments"

* "fix ci"

* "follow comments"

* "conficts. merge develop branch"

* repick

* "merge develop branch"

* "fix deterministic"

* "fix ci"

* "fix init"

* add normalize switch to box_coder_op

* add default prior box var

* update according to the review

* Auto generate python api for polygon_box_transform op.

* Add unitest.

* Modify optimizer in new API to support more usecase

* Modify CMake to include only modified examples

* fix conflict

* code clean