[CM] cairo in snd??

[Bill Schottstaedt]

Heh heh -- for the good sports amongst us (that's everyone!), I've got
a cairo backend running in the CVS Snd (replacing the deprecated
Gdk graphics stuff).  Lots of nits yet to squash, such as getting the
cursor to move (sigh, cairo does not support XOR graphics!!).
I feel like I'm back at the old lab -- cairo is a gussied-up postscript
which was turtle-graphics made unreadable -- the more things change...