some changes, fix opencv

Joseph Redmon

2016-06-09 8a6ba2fff3ee1c14bca0aa0e0a909aba7057cc94

 src/rnn.c

@@ -199,7 +199,7 @@
            }
        }

        if(i%100==0){
        if(i%1000==0){
            char buff[256];
            sprintf(buff, "%s/%s_%d.weights", backup_directory, base, i);
            save_weights(net, buff);