[GRASS5] d.graph update for RGB triplets

[Hamish]

[d.vect.thematic legends]
> OK. I¹m working on this. I¹ve got the basic interface done and now
> need to add in the thematic code. The main issue I see at this point
> is how to create even a text legend. I thought I might be able to do
> it using d.graph, but this only shows the standard GRASS colors AFAICT
> (.e.g., red, green, blue,...).

d.graph is now updated in CVS to take RGB triplets.


enjoy,
Hamish