Added COCO, fixed memory leaks

Joseph Redmon

2015-07-30 846b3b4366c8d1a1ab7215db3ce4f4180ea53cb5

 src/detection_layer.c

@@ -204,6 +204,7 @@
    backward_detection_layer(l, cpu_state);
    cuda_push_array(state.delta, delta_cpu, l.batch*l.inputs);

    if (truth_cpu) free(truth_cpu);
    free(in_cpu);
    free(delta_cpu);
}