test=develop

* fix input<tensor>
test=develop

* fix split_ids
test=develop

* ElementwiseMul should not support SelectedRows

* fix scale op
test=develop

* change GetTensorFromVar() method to GetTensorOrSelectedRowsFromVar()

* fix operator

* refine MultiOutput

* fix MultiOutput
test=develop

* disable test_dist_save_load
test=develop

* fix elementwise_op
test=develop

* add get_sparse_as_op
test=develop

* add info for check
test=develop

* rename get_sparse_as_op with extract_rows_as_op.
test=develop

* elementwise doesn't support selected_rows

* fix regularizer

* remove extract_rows_as
test=develop

* fix ci
test=develop

* add test for sum_op

* fix regularizer
test=develop

*  test=develop

* fix pserver weight decay multi inputs test=develop

Revert "cherry picked windows patches."

Add TESTING_DEBUG_MODE to support debug info in daily CI test

fix pserver weight decay multi inputs

fix test_analysis_predictor

Add reorg op

Make OpHandle/VarHandle and ir::Node works cleaner

test=develop

test=develop

cherry picked windows patches.

"fix comment"

optimize pyreader

test=develop

* fix selected_rows bug
test=develop

* refine cos_sim
test=develop

test=develop

test=develop

fix mac

Delete buggy selected_rows functor

test=develop

add vadd, vaddrelu jitcode

fix run error on mac

test=develop

test=develop

recordio is not the official API in Fluid 1.0. Remove unittests for it.

test=develop

`cwd` was not set before when get commit SHA. The default `cwd` is the current build directory. However, the build directory might not be the subdirectory of source. The `git` command will fail when that happened.

test=develop

Dry run tests will skip `Op.Run` and just perform job scheduling. It helps to analysis dead lock in PE.

test=develop

test=develop

refine analysis_resnet50_tester

clean rpc server profiler

test=develop

Fix googlenet bug with rule

fix_recordio_internal_link

test=develop

*  fix mkdir conflict

test=develop

Optimize thread pool