Merge branch 'winograd' into 'master'

Support winograd convolution type conversion.

See merge request !8

validate_model.sh

@@ -117,7 +117,7 @@ rm -rf ${CL_BIN_DIR}
 rm -rf ${CL_CODEGEN_DIR}
 mkdir -p ${CL_BIN_DIR}
 mkdir -p ${CL_CODEGEN_DIR}
-adb pull ${KERNEL_DIR} ${CL_BIN_DIR}
+adb pull ${KERNEL_DIR}/. ${CL_BIN_DIR}
 python lib/python/tools/opencl_codegen.py \
   --cl_binary_dir=${CL_BIN_DIR} --output_path=${CL_CODEGEN_DIR}/opencl_compiled_program.cc