[Pixman] [PATCH pixman] V2 Implement PIXMAN_FILTER_GOOD/BEST as separable filters

[Bill Spitzak]

Actually. as long as you can also specify the filter width, there is no 
need for a filter that matches BILINEAR, because linear at size = 1 will 
match. So I think I can clean up this patch to remove the differences in 
the set of filters from the older one.

This is still a problem for non-affine transforms, where the filter will 
vary in size. A method of indicating you want to match bilinear is still 
needed, as the size cannot be sent then.