dailystatus.py: try to fix patch count saved in tag

Try to fix patch count and report count which saved
in tag.

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
cocci: add empty cocci file empty.iso

Add empty cocci file for cocci pattern using.

Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>