Made banded and step spectrums use a numbered texture rather than restarting for each graphics object, this saves heaps of memory on the coronaries and presumably other meshes.  Had to properly implement the settings_changed flag to ensure it updates correctly when things change now.
Made banded and step spectrums use a numbered texture rather than
restarting for each graphics object, this saves heaps of memory on the
coronaries and presumably other meshes.  Had to properly implement the
settings_changed flag to ensure it updates correctly when things
change now.


git-svn-id: 4705079bc6b8aadf675e3696f5c015a6aa4916e3@1015 3c1deb5b-d424-0410-962d-aba41a686d42

OpenCMISS/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc