* Enable mobilenet UT in separate test class; use download cache by paddle download utility and cache unzip; and fix typo; test=develop
* Extract cache_unzipping function for reuse; format code style; test=develop
* Simplify the test code by define a combined function for both downloading and unzipping; test=develop
* Refine the beam_search op and test.
* A basic CUDA implementation of beam_search for small batch_size.
* Implement CUDA kernel for beam_search_op.
* Use multiple CUDA threads in the same block to select the top beam.
* Update the python api of beam_search op.
* Enable extend function in CPU kernel of beam_search op.
* Unify the CUDA codes.
test=develop
* Unify the CPU kernel of beam_search op.
* Ensure the seletced items of beam_search_op's CPU kernel sorted by scores.
* Update the description of beam_search in API.spec.
* Enable the use of CUDA kernel in beam_search op.
* Exclude the beam_search's CUDA unittest when there is no CUDA gpu, and delete some debuging statements.
test=develop
* Follow comments.
test=develop
* Call the CPU kernel for beam_search op when batch_size > 4.
test=develop
* Remove the except of is_empty op in PrepareData.
test=develop
* Add the calibration tool code for int8 inference and focus test.
* Fix the calibration tool per the review comments.
test=develop
* Update the calibrator doc and remove extra line.
* Fix the invalid is_negative_input attr set on Mobilenet.
* Add the comments and fix the format issue.
test=develop
* Update the CMakelist.txt for Calibration PR.Disable the Calibration UT if not enable MKLDNN.
test=develop
* Update the CMakeList.txt.
test=develop
* Disable the test_calibration case on WIN and MAC.
test=develop
* Add the missing brackets.
test=develop
* Remove the outdated map operator which not supported on Python3.
test=develop
* Fix the style issue.
test=develop
* 1.Update the CMakeList.txt to disable calibration tool ut when the WITH_MKL is not set;
2.Add the workaround to enable the FLAGS_use_mkldnn for PR_CI(PADDLE).
test=develop
* Fix the typo and format the License header.
test=develop
* 1.Add and Update TODOs per review comments.
2.Code clean.
test=develop
* Add generate_mask_labels_op to support Mask-RCNN.
* Refine sigmoid_cross_entropy to support nomalize mode.
* Fix generator_proposals_label.
* Use DeviceTemporaryAllocator in roi_pool and roi_algin.
* Remove shape check in data_feeder.