* resolved two conflicts caused by lineend changes in
   canvashelper_texturefill.cxx and implrenderer.cxx. Took the cws
   version, which uses new texture fill semantics, and fixes clipping
   bug
 * binned file header changes from head for deleted files

 * the fourth quadrant hue calculation had a typo for the rgb2hsl
   function. fixed now.
 * added testcase that break before, and works now

 * moved common gradient step size code
   out to canvastools to share
 * reverted back to manual polygon rendering
   for anisotrophic rect and ellipse gradients
 * fixed tilemode==none case for bitmap fills