[plug] Bt868/829 support

[Craig Ringer]

> I had lots of problems with my ATI AIW Radeon 8500 a while ago in
> windows, they went through a perioid of some really bad drivers. The
> current drivers are good though.
> 
> Under X it's fine with one exception, the xv extension doesn't work.

Yeah. I wouldn't use a Radeon myself currently, because I want good 
cross-platform  driver support. Currently, you just can't beat NVidia's 
drivers under X. If ATI improve theirs to the same full-featured 
standard (texture compression anybody?) as their 'doze drivers and 
NVidia's linux drivers... I'll have a Radeon as my next video card, no 
problem. I /want/ that video quality.

Craig