Start extracting author line from /root/tools/Changelog_all...
Restored the author line to file ./tmp_author.

./patch_sta /root/tools/Changelog_all -l 2
Total patches of this release: 83160
Averagely, every person commited 18 patches
We have a long tail:
There are 2577 people who committed less than 2 patch.
But their contribution is about 3% of total