framebufferTrue =
MapIndexColorThroughClut(framebufferIndex,clut)
Take an index color frame buffer and a clut, produce a true color
framebuffer. This is based on integers, not the [0-1] clut model of
OpenGL and PTB-3.
3/22/05 dhb Wrote it.
Psychtoolbox/PsychOneliners/MapIndexColorThroughClut.m