We now have a limited support of the code review. Still some work to be
done to allow the submission of new patches on a given review and update
the status. For the moment, only pre-commit review is supported.
This is because git will return an error code when testing if a commit
exists and in fact does not exist. So it means that we get an exception
on all the string "commit foo" when foo is not a commit in the issue
text.
