Enable MKL-DNN INT8 Concat Kernel.#16156

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luotao1 merged 8 commits intoPaddlePaddle:developfrom

xiaolil1:concat

Mar 22, 2019

Commits on Mar 11, 2019

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Merge branch 'develop' of https://github.com/PaddlePaddle/Paddle into concat
xiaolil1
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Commits on Mar 20, 2019

Restructure INT8 Concat kernel.
xiaolil1
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