ext4 scalability testing results

As discussed in recent ext4 developer concalls, I've added 2.6.34 XFS results for the Boxacle large_file_creates and random_writes workloads to the ext4 results collected earlier.

To make it easier to navigate through the data, I've also added graphs and constructed a simple web page with links to the raw results, lock stats, etc.

It's at: http://free.linux.hp.com/~enw/ext4/2.6.34

Eric