Use RenderMaterial() instead of SendMaterialProperties()

This changes the vtkCompositePainter class to use RenderMaterial()
instead of SendMaterialProperties() for setting the solid color on
individual blocks. The SendMaterialProperties() call did not correctly
scale the material properties.

Change-Id: Ia17ccbd75e677770e3ebf2cdb30bda224c62f3dd
Merge topic 'multi-block-color-support-2' into master

e3f5e52d Use RenderMaterial() instead of SendMaterialProperties()