Xrender extension enabled in wsfb driver at 8bpp

[Matthieu Herrb <matthieu_(_dot_)_herrb_(_at_)_laas_(_dot_)_fr>]

Hi,

recent X snaphots for sparc and macppc have the X render extension 
enabled at 8bpp in the wsfb driver.

This will make Gtk+ applications look better (and even work around a bug 
in Cairo at 8bpp when render is not available), but will also change the 
 behaviour of other X applications since the list of available visual 
is different.

This change is also more consistent with what other driver do at 8bpp.

If you rely on X at 8bpp using the wsfb driver, please test recent 
snapshots and report back any success/failure with your favourite 
applications.
--
Matthieu Herrb