* avoid saving shared params repeatedly (#3561)

* test=develop
Co-authored-by: Nzhupengyang <zhu_py@qq.com>
Co-authored-by: Nhuzhiqiang <912790387@qq.com>

* move train demo code, test=develop

* test=develop

update v2.6 benchmark
Co-authored-by: NYuan Shuai <ysh329@users.noreply.github.com>

[Cherry-pick][BUG FIX] Fix the issue that Android static library can not be linked properly  (#3695)

fix the demo of opt saved can't work on windows

 fix the doc

[cherry-pick] [BUG FIX] Fix the issue that paddle-lite python lib can not inference on mac env (#3684)

* Update benchmark doc for v2.6, test=develop, test=document_fix (#3660)
* [Doc] Update shell for make benchmark_bin (#3661)

* test=develop, test=document_fix, the document of python demo

* test=develop, test=document_fix, the document of python compiled
Co-authored-by: Nhuzhiqiang <912790387@qq.com>

* test=develop, fix the x86 demo can't work on windows

* test=develop,test=document_fix, add the doc of python demo

* test=develop, add the document of windows compiled

* test=develop, modify the x86 demo on windows

* test=develop, modify the name of windows batch file

* test=develop, fix the doc

[Cherry-pick] [Compile] [fluid-lite-subgraph] Fix fluid-lite compile error, because of not defined LITE_WITH_LOG (#3611)