Developer statistics for 2.6.30

It might be interesting to look at the non-author sign-offs by person as a percentage of changes, rather than as a percentage of non-author sign-offs. It's not as interesting to know how much of the total gatekeeping is done by someone as to know how much of the total change is through them. In this case, 10.4% of the changesets got David Miller's sign-off in transit.