2. refine after mrege from github

1. fc bias fuse
2. conv + bias + relu fuse
3. conv + bn fuse
4. graph -> ssa graph

split op
the cxx_api_bin.

fix conv_bias_relu fuse bug，x86 conv kernel bug

Add ARM backends

See merge request inference/paddlelite!4

Merge branch 'incubate/lite' of http://10.87.145.36/inference/paddlelite into tangjian/incubate/lite

fix gitlab ci

See merge request inference/paddlelite!3

fix conflicts

fix typo

See merge request paddlepaddle/paddlelitearmbackend!19

enable batch_norm op and add unit test

See merge request paddlepaddle/paddlelitearmbackend!17

test=develop

* bn pattern

* 1. add conv bn fusion pass(conv2d, depthwise_conv2d)
2. modify the graph to ssagraph
test=develop

fix split op and arm unit test

See merge request paddlepaddle/paddlelitearmbackend!15

enable Mul

See merge request paddlepaddle/paddlelitearmbackend!16

Develop

See merge request paddlepaddle/paddlelitearmbackend!14

fix reshape core

See merge request paddlepaddle/paddlelitearmbackend!13

add gitlab-ci.yml

See merge request inference/paddlelite!1

test=develop

add split op and arm compute

See merge request paddlepaddle/paddlelitearmbackend!9