[Cairo] Cairo on older X servers, (eg. with Render version 0.2)

[Keith Packard]

Around 12 o'clock on Sep 30, Carl Worth wrote:

> Similarly, page-based backends such as for PDF or PostScript will
> require some sort of showpage operator. I'm not sure that the
> semantics of showpage and flush are so dissimilar that we couldn't get
> by with a single function to serve both needs.

I'd like to leave the printer-centric 'showpage' operation separate; the 
usage patterns are enough different that attempting to conflate 'flush' 
with 'showpage' seems like a bad idea.

-keith