Some bug fixes, random stuff

Makefile

src/box.c

src/box.h

src/coco.c

src/convolutional_layer.c

src/crop_layer.c

src/cuda.c

src/darknet.c

src/data.c

src/data.h

src/detection_layer.c

src/image.c

src/image.h

src/imagenet.c

src/layer.c

src/layer.h

src/maxpool_layer.c

src/network.c

src/network.h

src/network_kernels.cu