pvr: link multipass TA contexts. Each pass has its own.
pvr: get rid of context pool
naomi2: constant color shading. Use model diffuse and specular
selection. Don't use vtx color for offset color.
naomi2: pseudo-parallel lights fix
naomi2: pass-through TA data needs forced list type. Terminate with
end-of-list
enable RTT copy to vram for Beach Spikers
Flyinghead