Revert "Fix allocator bug"

* modify the interface of Pass::Allay
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* Polish code
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* Fix Travis CI
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* fix Pass::Apply interface
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* Fix Travis CI
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* Make unitest of fsp op faster and more stable.
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* Skip unitest of fsp op.
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Add SpectralNormGradOpDescMaker

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Fix gc bug

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add include headers to fix travis-ci
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* Refine default MKL-DNN Pass order

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* Add comment to default MKL-DNN Pass list

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* C-API quantization core

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Co-authored-by: NSylwester Fraczek <sylwester.fraczek@intel.com>

* Decouple Quantizer from AnalysisPredictor

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* fixes after review

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* renamed mkldnn quantize stuff

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* remove ifdef from header file

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* test=develop, fix space_to_depth_doc

* test=develop, refine indent

* test=develop, refine code

* test=develop, add api spec

Fix allocator bug

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* Disable compare for accuracy issue.

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* Add todo comments to show more information.

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Enhance gc to support deleting tensor buffer in advance

* test=develop, add install check

* test=develop, add install check scripts

* test=develop, refine language

* test=develop, add api spec

* test=develop, change cdn to bj to pass ci

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* extend the slice function for python
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* test=develop, add some Layers and tests

* test=develop, add more layers

* test=develop, add more layers

* test=develop, add force cpu option

* Update test_layers.py

remove pdb

* test=develop, refine code

Update INT8 calibration README

* fix cdn issue, test=develop

* fix memory optimize bugs, test=develop

* fix memory optimize bugs, test=develop

* remove add/sub_2 op, test=develop

* disable memory_optimize by default, test=develop

* disable inplace activation in python, test=develop

* fix unittests, test=develop

* fix unittests, test=develop

* bug-fix, test=develop

polish deepCF model to support real dataset

Cherry-pick from PaddlePaddle:feature/anakin-engine: Anakin subgraph support.

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Fix quantization hang bugs.

fix deadlink

* update jitkernel doc

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* follow comments

* follow comments

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Checkpoint hotfix

* test fix fetch bar place for ce

* fix ps mode dist train in develop test=develop

* fix style check test=develop

* update test=develop

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Move cpu_quantize_* passes into mkldnn subfolder

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