* ignore warnings of external libraries, test=develop (#24193)

* fix repeat definitions in liengine.cc, test=develop (#25020)

* remove paddle_use_kernel and paddle_use_op. test=develop (#25189)

* fix compile for lite subgraph. test=develop (#25285)

* [CI] [Lite-Subgraph] CI add lite subgraph check. (#25346)

* supports xpu runtime, test=develop (#25554)

* fix cmake of lite, test=develop (#25680)

* change commit files, test=release/1.8
Co-authored-by: NWilber <jiweibo@baidu.com>

* modify the interface of Pass::Allay
test=develop

* Polish code
test=develop

* Fix Travis CI
test=develop

* fix Pass::Apply interface
test=develop

* Fix Travis CI
test=develop

and #pragma once in edited headers

add #include<string> in edited headers

test=develop

* 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

Reduce one level of inheritence.

add doc

* Use Builder Chain to decorate new builders. It is easy to extend
  builders.
* Make graphviz path as a build strategy, not a FLAGS.

* cpplint test and add tesnor_py_test.cc

* Update

* Update

* Update tensor_util.h

* Update with moved TensorDesc

* Fix tensur_utils.cu

* Update

* Update

* Update

* Update

* Make tensor_util.cu a symbolic link