performance work

[Neil Graham]

On Tue, 2008-12-16 at 16:23 -0700, Jordan Crouse wrote:

> I recommend running the Cairo benchmarks on the XO again with 
> acceleration turned off in the X driver. This will give you a good 
> indication of which operations are being accelerated and which are not. 

Done.

http://screamingduck.com/Cruft/cairo_benchmark_XO_NoAccel.txt


At a cursory glance it looks like an overall improvement without
acceleration except for lines-xlib, add-xlib and over-xlib