* Change the order of paths so that black paths are at the bottom...
* Optimise - only do this if it is necessary...
*/
private static void reorderPaths(FEGlyph glyph)
{
DisplayOptions gdo = DisplayOptions.getGDOForScaling();
glyph.makeGlyphIfNeeded(gdo);
// make instructionstream from path list...
final InstructionStream is_in = glyph.getInstructionStream();