[cairo] Cairo version now at 1.5.1

[Bill Spitzak]

Keith Packard wrote:
> On Wed, 2007-06-27 at 14:50 -0700, Carl Worth wrote:
> 
>>  * Vlad's 24.8 work. Vlad, did you need more review on this or is it
>>    ready to go?
> 
> I haven't seen much discussion over the split here; is 24.8 the 'obvious
> right choice' or are there arguments for 26.6 or 28.4? 24.8 does avoid
> alpha-level banding on 8-bit alpha surfaces; is that a sufficient
> justification?

Isn't there some hardware support for 24.8 due to Microsoft using it?