Fix Delete files operation

Method os.path.filename doesn't exist. Change it to os.path.basename.
Fix missing empty line in commit message during gitcc checkin

Fixes #44.
The empty line is missing while parsing git log and then commiting to CC.
Fix git log format to print raw body (%B).
Merge remote-tracking branch 'origin/fix-empty-line-in-commit-message'
Merge remote-tracking branch 'origin/fix-delete'