Duplicate memory allocated by IndexedTriangleArray

[Duncan]

I am currently creating a IndexedTriangleArray that references my
arrays of coordinates, colors, normals, and their indices. While
doing some profiling and memory debugging, I noticed that there are
separate index arrays being allocated for the coordinates, colors, and
normals, even though I specify IndexedQuadArray.USE_COORD_INDEX_ONLY,
it still allocates arrays for the colors and normals.

I was hoping someone knows of a way to be able to either prevent the
IndexedTriangleArray from allocating the extra memory and use my
reference to my one index array or even just allocate one extra array
not all three.