[BioC] Rgraphviz warnings in R-2.0

[Jeff Gentry]

> Thank you so much. I asked question because when I do
> below code  R-1.9 then with graphviz 1.12 and
> Rgraphviz 1.4.0 it was working great. 
> -----------------------------------
> Error in FUN(X[[1]], ...) : couldn't find function
> "convertRadius"
> ------------------------------------

convertRadius is an old function that no longer exists, but you're not
calling it directly.  Can you provide a 'traceback()', because the string
'convertRadius' doesn't show up anywhere in the current R code so I have
no idea where you're piciking that up from.