don't have a global attribute called "setup"
don't have a global attribute called "setup"

This attribute causes problems due to a nose bug. It wasn't exposed in xpyb and
thus is probably safe to rename, as nobody (hopefully) was depending on it. In
any case, they can still access it as xcffib._setup if they really want.

Signed-off-by: Tycho Andersen <6b523322678240882acbb4da5312a12d8cd0082d@tycho.ws>

tych0/xcffib