* Support int8 type.

* tensor windows support

* "fix ci"

* "remove utils"

* data_type

* "remove tabs"

This reverts commit b2df1700.

* dist transpiler add control dependency var between send and recv

* fix async deps

* follow comments and refine

* fix deps connect for rpc ops

* Add Python Callstacks when Op::Run error

* Skip op with sub-block

* refactor: refine callstack info's format

* Reshape only support matrix

* Polish Python code

* Fix UT

* Fix Py3

* make fc fuse work with ditu rnn
* add ditu rnn data download to CMAKE

* link IR graph to analysis graph

* add clean code and update

* add infer_clean_pass

* add ir_pass_manager

* support fc fuse executation

* fix ir circle

Port dist_transpiler new added codes
Port ut for clone desc

* cudnn widndows

* "add comment"

* "windows support"

* "fix cmake error"

when while_grad, it writes multiple @EMPTY@ with no VarDesc.

Also replace memory types from int64_t to size_t

* add rw lock test

* optimize read_write and wirte_read test

Optimize selected rows for dist lookup table with rwlock