Resolve WB-770 Histogram envelope is a straight line: In the Matrix4x4...

Resolve WB-770 Histogram envelope is a straight line: In the Matrix4x4 implementation, logic was present to 'fix numerical error' which changed 'near zero' values to zero and this caused the polyline algorithm (converts line segments to triangle) to fail when a axis/dimension was large.  By making the value zero, it caused an incorrect conversion (matrix multiplication) of model coordinates to window coordinates.  Usage of the 'fix numerical error' code has been removed and resolves this issue.