Fix depth_to_space opencl global work size bug.

See merge request !386

Relax batchnorm and fc op test precision.

See merge request !384

Fix CI unittest error checking

See merge request !372

Update comments for mace_tuntime.h

See merge request !382

Replace abs error with relative error for ops test.

See merge request !383

Add anonymous namespace for local variables and functions.

See merge request !381

refactor mace runtime api

See merge request !375

Share tmp buffer among ops

See merge request !379

Log feature map size and arguments during benchmark

See merge request !380

  - Print feature map of each layer.
  - If op is convolution or pooling layer, print:
    stride, padding, dilation and kernel size, too.
  - For padding, if padding type is given, print 'VALID/SAME/FULL',
    else if padding values are given, print padding values.

update fds url in Dockerfile

See merge request !378

Prefer to select unlocked devices in CI

See merge request !377

fix caffe validate

See merge request !376

update validate_tools.sh to support docker using in CI

See merge request !374

Add Pad op for deeplab-v3

See merge request !371

Move wiki to sphinx docs

See merge request !370

add file lock to adb_run

See merge request !369

Change the default gpu perf hint to normal but benchmark with high.

See merge request !368

Fix python code style against pycodestyle 2.4.0

See merge request !367