add test code for data formatting for FPGA track close #948

fix:#946

add genet single build

repair bug of multithreading depthwise_conv3x3(s2)

Compress common code to function for FPGA track close #941

add fssd ops impls #924

fix compilation problems

Implement concat op for FPGA track close #935

Modify FPGA kernels to comply to Gtype close #932

Fix bugs to format data for FPGA track close #930

repair bug of dropout op

add split/bilinear_interp/flatten/op for support fssd #924

to be impl.  for fssd
add googlenetv1 and fssd unit test

add border check in gemm

add openmp support for ios