Merge pull request !2557 from huanghui/unsorted-segment-sum-fission-pass

Merge pull request !4340 from liubuyu/master

addressed code review comments

fix cpplint and pylint

trying to fix python ut

fix smoke test

remove headers

fix iterator file

fix pr comments

fix new file

Merge pull request !4315 from JonathanY/akg_ops

Merge pull request !3819 from jiangzhiwen/jzw/c_api_clue

Merge pull request !4265 from zhangbuxue/support_two_mstypes_do_equal

Merge pull request !3800 from baihuawei/multinomial-c

Merge pull request !4269 from fary86/change_export_interface

Merge pull request !4280 from wuxuejian/embedding_input_adapt

Merge pull request !4219 from huanghui/add-op-unique

Merge pull request !3771 from cathwong/ckw_c_api_textfile_nosampler

Merge pull request !4245 from nhussain/solarize

Merge pull request !3978 from Peilin/master

Merge pull request !4297 from guozhijian/code_sync_incubator_f3c32baf_to_master_fcfc75a3_0811

Merge pull request !4289 from xiefangqi/fix_pad_validate

Merge pull request !4258 from leopz/fix_doc

Merge pull request !4268 from liubuyu/master

Merge pull request !3874 from qianlong21st/soft_dvpp

Merge pull request !4255 from lianliguang/unify-primitive

Merge pull request !4226 from ZPaC/master-add-gpu-div-kernel

Merge pull request !4249 from XunDeng/pp_poc_v3

Merge pull request !4021 from XunDeng/scalar_affine_softplus

Merge pull request !4197 from YuJianfeng/adam_assign

Merge pull request !4220 from liyong126/minddataset_pk_num_samples