The rounded and diagonal styles are supported in shapes, so we remove them from the arrays of style values passed to the renderers. This fixes bug 255.
The rounded and diagonal styles are supported in shapes, so we
remove them from the arrays of style values passed to the renderers.
This fixes bug 255.

kbrock/graphviz,pixelglow/graphviz,BMJHayward/graphviz,jho1965us/graphviz,tkelman/graphviz,pixelglow/graphviz,kbrock/graphviz,jho1965us/graphviz,kbrock/graphviz,kbrock/graphviz,jho1965us/graphviz,ellson/graphviz,tkelman/graphviz,MjAbuz/graphviz,kbrock/graphviz,tkelman/graphviz,MjAbuz/graphviz,pixelglow/graphviz,jho1965us/graphviz,tkelman/graphviz,tkelman/graphviz,pixelglow/graphviz,BMJHayward/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,tkelman/graphviz,pixelglow/graphviz,BMJHayward/graphviz,jho1965us/graphviz,BMJHayward/graphviz,pixelglow/graphviz,ellson/graphviz,jho1965us/graphviz,tkelman/graphviz,tkelman/graphviz,MjAbuz/graphviz,ellson/graphviz,tkelman/graphviz,tkelman/graphviz,jho1965us/graphviz,ellson/graphviz,BMJHayward/graphviz,ellson/graphviz,BMJHayward/graphviz,ellson/graphviz,jho1965us/graphviz,ellson/graphviz,kbrock/graphviz,BMJHayward/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,kbrock/graphviz,kbrock/graphviz,kbrock/graphviz,ellson/graphviz,pixelglow/graphviz,MjAbuz/graphviz,pixelglow/graphviz,BMJHayward/graphviz,pixelglow/graphviz,tkelman/graphviz,kbrock/graphviz,jho1965us/graphviz,MjAbuz/graphviz,BMJHayward/graphviz,jho1965us/graphviz,MjAbuz/graphviz,MjAbuz/graphviz,jho1965us/graphviz,kbrock/graphviz,pixelglow/graphviz,BMJHayward/graphviz,ellson/graphviz,pixelglow/graphviz,ellson/graphviz,ellson/graphviz