git-log-diff.py: allow difft number of lines for afile and bfile
git-log-diff.py: allow difft number of lines for afile and bfile

Change-Id: I63814619ef552c8ca585feb716ee23e7a9bf4281
(cherry picked from commit da9787aa8cefcbab56af83a08bc2ea5bcfc3e999)

intelxed/xed,intelxed/xed,intelxed/xed,intelxed/xed