Fixes for small objects. And fixes of densenet201_yolo.cfg, resnet50_yolo.c...

AlexeyAB

2018-03-08 a6c51e3b758aee7fd3a6f1d37daa8dcad4891e52

 src/detection_layer.c

@@ -59,7 +59,7 @@
            for (i = 0; i < locations; ++i) {
                int offset = i*l.classes;
                softmax(l.output + index + offset, l.classes, 1,
                        l.output + index + offset);
                        l.output + index + offset, 1);
            }
        }
    }